Why September is the Best Time to Set Goals: Science-Backed Tips for Lasting Resolutions
by Marion Hewitt | 16 September 2025
Tired of New Year’s resolutions that fade by February? September offers a science-backed fresh start that actually sticks.
Every January, we tell ourselves the same story. This year will be different. We buy new journals, join gyms, and make ambitious promises. But after a few weeks most resolutions have already slipped away. Sources suggest that about 80% of people who set New Year resolutions have abandoned them by the second week of February!
Why September is the Best Time to Set Goals
It has always struck me that the New Year is a strange time to try something different, given a resolution is often to do something that is ‘good for us’ but may not always be something we enjoy.
January is cold, dark, and often financially and emotionally draining after the holidays. Many of us wanting to wrap up warm and stay cocooned until winter has passed. Our brains and bodies are running on low energy reserves and this makes it the worst possible time to attempt radical change.
Now think about September. You’ve (hopefully) had a break, whether it was a full holiday or just a slower pace of summer. The light is still good, energy levels are higher, and routines are naturally shifting. That makes now a powerful time to set goals that actually stick.
Why September is the Best Time to Set Goals
Science backs this up and evidences why this is true.
A Clear “Fresh Start”
Researchers call it the fresh start effect, the motivational boost we feel when life offers a natural dividing line between “old me” and “new me.” In a series of studies, Dai, Milkman and Riis (2014) found that people are more likely to set ambitious goals right after time-based landmarks such as birthdays, the first day of spring, or the start of a school year. September is full of these cues with the end of summer, the back-to-school rhythm (whether we are directly affected or not), and the natural shift into autumn. Your brain reads this as a new chapter and is primed to begin.
A Rested Brain Works Better
Change relies on the prefrontal cortex, which is the part of the brain that manages planning, decision-making and self-control. When we’re tired or stressed, its performance drops. Studies on holiday effects (de Bloom et al., 2017) show that even a short break reduces cortisol (the chemical produced when stressed), lifts mood, and boosts cognitive flexibility for weeks. After a summer pause, most of us return with higher mental energy and stronger executive function, the exact conditions we need for planning and sticking to new habits.
Good Moods Boost Motivation
Positive emotions expand our perspective and help us discover new solutions, as evidenced by psychology’s broaden-and-build theory (Fredrickson, 2001). After holidays, people often report more gratitude and optimism. Both states are strongly linked to perseverance and creativity. Compare that with January, when short daylight hours and post-festive fatigue can dampen mood and motivation. September offers a psychological lift that makes taking on challenges far easier.
Routines Are Already Changing
Habits stick best when they’re attached to other changes. Duhigg (2012) who is well known for his work on building healthy habits highlights that new cues and routines create strong habit loops in the brain. September naturally brings these cues as workplaces launch new projects, and social calendars shift from the freedom of summer to more of a routine. Instead of trying to wedge new behaviours into the entrenched patterns of mid-winter, you can ride the natural wave of transition.
Easier to Believe You Can Grow
Periods of rest and reflection foster a growth mindset and is the belief that abilities and skills can be developed through effort (Dweck, 2006). After time away, many people feel more self-aware and hopeful. This encourages experimentation and resilience. This optimism makes it easier to take small risks and learn from missteps, both key ingredients in long-term habit change.
In short, September aligns with how our brains and emotions work. We’re more rested, more optimistic, and surrounded by cues that encourage forward motion. All conditions far more supportive of lasting habit formation than the cold, low energy start of January.
Practical Steps for Your September Reset
Your September Reset is not about wholescale change, it is about identifying realistic, practical changes you can make that will be of benefit to your life.
Take action by following some of the ideas below.
- Mark your reset. Begin with a small ritual that signals a new chapter. Perhaps buy a fresh notebook (I’ve bought one and enjoy having that clean, clear, first page to write down my ideas), reorganise your workspace, or clear out a cupboard.
- Reflect on energy. Consider when in recent summer moments you felt most alive or relaxed. Ask yourself “What can I carry into daily life from those experiences?” One for me would be enjoying time by the sea so I ensure I incorporate a walk each day that goes to the beach.
- Set approach goals. Frame resolutions around what you’re moving toward, not what you’re avoiding. The language use is important and should be encouraging. For example: “I will plan my meals for the week to help me eat in a healthier way” instead of “I will stop eating badly.”
- Anchor habits to routines. Tie new behaviours to September’s natural schedule shifts. For example, plan meals for the week ahead on Sunday evenings, or do your most important task before checking emails to help you make progress before getting caught up in reactive tasks.
- Visualise success. Picture how you want to feel by December. Create vivid imagery. Think about what will you see, hear and feel? This creates a mental map that can be used to guide daily choices.
- Celebrate small wins. Each week, jot down three things you achieved toward your goals and give yourself a small reward. This builds dopamine-driven momentum.
September as Your Launchpad
January will always be marketed as the time for change as the date flips over to a new year. But when you look at the science, September makes far more sense. It’s lighter, calmer, and filled with natural cues for a fresh start.
So this year, try something different. Treat September as your personal reset button. Use the energy you’ve gained, anchor habits into your new routines, and celebrate each small step forward. By the time January arrives, you won’t need to make another list of resolutions as you will already have them cracked!
Ready to make September your real fresh start?
Choose one action from the list above and begin today.
#SeptemberReset #FreshStartEffect #GoalsThatStick
Call 07980 513646 or send us an email marionhewitt@proteasolutions.co.uk