The Fresh Start Effect and Why Habits Break When Life Changes
The fresh start effect is the finding that people are more likely to start on a goal just after a "new beginning": a Monday, the first of the month, a birthday, New Year. Life changes such as a move work in a similar way on habits, because they strip away the cues that ran the old ones.
The two ideas come from different lines of research, but they point the same way. Some moments make it easier to begin, and some make it easier to change. This page covers what each body of research found, where the famous numbers come from, the trial where a fresh start did nothing, and how to use both ideas without leaning on them.
What is the fresh start effect?
The fresh start effect is a rise in goal-directed behaviour right after a time landmark: the start of a week, month, year or term, a birthday, or a holiday. In a 2014 study, searches for "diet", gym visits and sign-ups to goal contracts all went up after these dates. The authors argue landmarks let people put past failures behind them.
The term comes from Hengchen Dai, Katherine Milkman and Jason Riis, Management Science, 2014; the authors' copy is free to read. They called these dates "temporal landmarks": points that stand out in time and split it into chapters.
Their explanation has two parts:
- A landmark closes a chapter. Last month's slips feel like they belong to a past self, which makes it easier to believe this time can go differently.
- A landmark makes you look at the big picture. Pausing at a boundary turns attention from the day's tasks to where your life is heading.
New Year is the best-known landmark, but the study's point is that it is one of many. Every Monday, every first of the month and every birthday offers a smaller version.
What the 2014 study found
Three data sets told the same story. Searches for "diet" rose 14% at the start of a week and 82% at the start of a year. Gym visits at a university rose 33% at the start of a week and 47% at the start of a term. Commitments to goals on a contract website rose 63% at the start of a week and 145% at the start of a year.
All three figures come from the 2014 paper, each measured against an ordinary day:
- Google searches for "diet" (US, 2004 to 2012): up 14.4% at the start of a week, 3.7% at the start of a month, 82.1% at the start of a year, and 10.2% after public holidays.
- Gym visits by 11,912 undergraduate members of a university gym: up 33.4% at the start of a week, 14.4% at the start of a month, 47.1% at the start of a term, and 24.3% after school breaks. Students also went more in the month after a birthday, except after their 21st, when they went less.
- Goal contracts on stickK, a website where people commit to goals, from 66,062 contracts: up 62.9% at the start of a week, 23.6% at the start of a month, 145.3% at the start of a year, 55.1% after public holidays and 2.6% after a birthday.
The goals on stickK went well beyond health: career, study, relationships. That suggests the effect is about starting goals in general, not only diets and gyms.
Note what these numbers measure: people starting something. The study did not follow whether the new starts lasted.
When a fresh start did nothing
In a trial with 13,323 people who took medicines for cholesterol, diabetes or blood pressure irregularly, reminder letters timed for a birthday or the New Year, some framed as a chance for a fresh start, did not improve how regularly people took their pills compared with letters sent on ordinary dates. A well-timed start is not the same as a lasting change.
The trial is Dai and colleagues, JAMA Cardiology, 2017, run by several of the same researchers who described the fresh start effect. People received a reminder letter either near a birthday, a few weeks after New Year, or on a random date. Some letters called the date "an opportunity to make a fresh start". Over the next 90 days, none of the timed or framed letters did measurably better than the control.
The authors reported the result plainly, and it is the most useful caution in this area. Timing can raise the odds that someone starts. It does not do the work of keeping going, especially for a task that has to be repeated daily.
A later review by Dai and Li (2019) also discusses when landmarks may stop motivating people, or even harm motivation. One example to keep in mind from ordinary life: a landmark can become a reason to wait. "I'll start on Monday" on a Wednesday gives away five days.
Why habits break when life changes
Habits run on cues: the same place, time and people prompting the same action. When a move, a new job, a new school or a new baby changes those cues, old habits lose their trigger. In one study, students' exercise, TV and newspaper habits survived a move to a new university only where the setting stayed similar.
The study is Wood, Tam and Witt, Journal of Personality and Social Psychology, 2005. The researchers followed students transferring between universities. A habit such as exercising or watching TV carried over when parts of the setting where it happened stayed the same. When that setting changed, the habit was disrupted.
A second finding matters just as much. Once the habit broke, people's behaviour fell back under the control of their intentions. Students who wanted to exercise did; those who did not, did not. In the old setting, the habit had been running regardless of what they intended.
That is the double edge of a life change:
- Good habits are exposed. The gym on your old route, the walk with a neighbour, the routine that ran on autopilot: all can vanish with the move.
- Bad habits are exposed too. The evening snack in front of a particular sofa, the drink on the way home past a particular bar, can lose their trigger.
Psychologists call these moments "habit discontinuities". A review by Verplanken and Orbell (2022) discusses how efforts to change behaviour could make use of them, and how the design of everyday settings can shape habits directly.
The window after a move
When a change breaks old routines, there seems to be a short window when new behaviour is easier to set up. In a field experiment with 800 people, advice on greener habits changed behaviour more among households that had recently moved than among those that had not, and the window looked to be about three months after the move.
The study is Verplanken and Roy, Journal of Environmental Psychology, 2016, which tested what the authors call the habit discontinuity hypothesis. Half the households had moved recently and half had not. Those who had moved and got the advice changed more of 25 everyday behaviours over the next eight weeks, even after the researchers allowed for their past behaviour, habits and intentions. The behaviours were self-reported.
The practical point: the first weeks in a new place or a new job are when routines are still being set. What you do on the first Monday is on its way to becoming what you do every Monday.
How to use a fresh start without waiting for one
Use landmarks to begin, and cue changes to build. Pick the next near landmark (a Monday, the first of the month), not a distant one. Plan the habit in advance, with a cue in the new setting. If life has just changed, set up the habits you want in the first weeks, and do not rely on old ones surviving the move.
Practical steps, each tied to the evidence above:
- Pick a near landmark, not a far one. The 2014 data show Mondays and the first of the month work as smaller fresh starts. If you are reading this mid-week, "tomorrow morning" can be one too.
- Plan the first week before the date. A landmark raises the odds you start; the 2017 trial shows it does not keep you going. Write an if-then plan for when and where the habit happens.
- After a move or a new job, design the new setting on purpose. Decide where the running shoes live, what the new commute is for, what happens after dinner in the new kitchen. Old cues are gone; choose new ones.
- Carry the good habits across deliberately. List the routines that worked, and give each a cue in the new place in the first week.
- Treat a lapse as data, not a verdict. If a habit breaks after a holiday or illness, restart at the next cue. What to do when you break a streak covers the day after.
- Track the restart. A record makes a new start visible; see does habit tracking work? for the 138 experiments behind that.
Fresh starts and New Year's resolutions
New Year is the biggest landmark in the 2014 data: goal sign-ups rose 145% and diet searches 82%. That makes it a strong day to start and a weak plan for continuing. Most of what decides whether a resolution lasts happens in the weeks after, when the landmark has passed and daily cues take over.
The resolution tracker is built for that stretch: it keeps a year-long goal at week level, so January's start becomes a record you can check through February and March. Why most people fail at self-improvement covers the common reasons resolutions stall.
Two ways to borrow the New Year effect at other times:
- Make your own landmark. A birthday, a new month, the start of a school term or the first week at a job all worked in the 2014 data, and none needs to wait for January.
- Plan for the dip after a break. Holidays interrupt routines; a gym study on temptation bundling saw its effect fade after a holiday break. Pick your restart cue before you leave.
What the research does not say
It does not show that starting on a landmark makes a habit last. The 2014 study measured starts, not follow-through, and a large trial of fresh-start reminders found no effect. Research on life changes shows habits can break or form more easily then, but most of it relies on self-reports and on specific groups such as students.
A few limits worth stating plainly:
- Starts are not habits. More people search for "diet" on Mondays; no one measured how many kept dieting.
- The one trial was null. Timing reminders to fresh-start dates did not change medication taking in 13,323 people.
- Correlation, not experiment. The 2014 findings are patterns in real-world data; the study could not rule out every other reason people act differently on those dates.
- The life-change studies are narrow. One followed transfer students; the other asked 800 households about green habits and relied on their own reports.
- Waiting has a cost. No study shows that waiting for a big landmark beats starting at the next small one.
Frequently Asked Questions
What is the fresh start effect?
It is the tendency to start on goals right after a time landmark, such as a Monday, the first of the month, a birthday or New Year. A 2014 study found diet searches, gym visits and goal commitments all rose after these dates. The researchers think landmarks help people put past failures behind them.
Who discovered the fresh start effect?
Hengchen Dai, Katherine Milkman and Jason Riis described and named it in a 2014 paper in Management Science, using Google search data, university gym records and goal contracts from the website stickK.
Is the fresh start effect real?
The pattern is well documented: people do start more goals after landmarks. What is less clear is whether those starts last. A 2017 trial that timed medication reminders to birthdays and New Year found no improvement over reminders sent on ordinary dates.
Why do habits break when you move house?
Habits are triggered by cues in your surroundings: places, times, people, routes. A move removes many of those cues at once, so habits that ran on autopilot lose their trigger. A 2005 study of students changing universities found habits survived only where the setting stayed similar.
Is a life change a good time to build a new habit?
The evidence suggests yes. When old routines are disrupted, people act more on what they intend, and one field experiment found advice worked better in households that had moved in the past few months. Set up the habits you want in the first weeks.
Should I wait until Monday to start a habit?
A Monday can help you start, but waiting has a cost and the landmark will not keep the habit going. If you can start now, start small now. If you prefer a clean start, pick the nearest one, and plan the first week so the start does not depend on the date alone.