Wellness

The If–Then Trick: The Most Underrated Tool for Sticking to Your Goals

September 18, 2026 · 4 min read · Sleep & Recovery

Most goals fail in the gap between intending and doing. You fully mean to go for a run after work. Then work runs late, you’re tired, and the moment passes. One simple technique closes that gap more reliably than willpower.

What is an implementation intention?

It’s a plan in the format:

If [situation], then I will [behaviour].

Instead of “I’ll exercise more”, you decide in advance exactly when, where and how: “If it’s 7 a.m. on a weekday, then I’ll put on my trainers and walk for 20 minutes.”

The evidence

In 2006, Peter Gollwitzer and Paschal Sheeran published a meta-analysis pooling decades of research on this technique (Gollwitzer & Sheeran, 2006).

94independent studies

8,000+participants

Medium–largeeffect on reaching goals

Gollwitzer & Sheeran, 2006

Forming implementation intentions had a medium-to-large effect on goal attainment compared with simply having the goal. That’s a substantial effect for a technique that takes five minutes. The studies covered a wide range of goals, including health behaviours such as exercise, healthy eating and attending health screenings.

Why it works

The decision is already made. When the moment arrives, you don’t have to weigh up whether to act — you’ve already decided.
The cue does the remembering. Linking a specific situation to an action makes you more likely to notice the opportunity when it appears.
It’s the start of a habit. Repeating a behaviour in a consistent context is how habits form. In one real-world study, behaviours became more automatic with repetition, taking a median of 66 days to plateau, with a wide range between people (Lally et al., 2010). If–then plans give you that consistent context from day one.

How to write a good one

Weak	Strong
I’ll eat healthier	If I’m making lunch, then I’ll fill half my plate with vegetables
I’ll train more	If it’s Monday, Wednesday or Friday at 6 p.m., then I’ll drive straight to the gym
I’ll sleep earlier	If it’s 10:15 p.m., then I’ll put my phone on the charger in the kitchen
I’ll stretch	If I’ve just finished my morning coffee, then I’ll do 10 minutes of mobility
I’ll drink more water	If I sit down at my desk, then I’ll fill my water bottle first

Choosing a good cue

The cue is the most important part. Good cues are:

Quality	Example
Specific	“At 7 a.m.” beats “in the morning”
Reliable	Something that happens every day — waking, coffee, lunch, arriving home
Noticeable	A clear moment, not a vague state
Close to the behaviour	The cue happens where you can act right away

Linking a new behaviour to something you already do — “after I brush my teeth, I’ll…” — is often the easiest place to start.

Plan for obstacles too

Implementation intentions also work for the moments that usually derail you:

“If I feel too tired to train, then I’ll do just the warm-up and decide after.”
“If I’m offered dessert at work, then I’ll have fruit instead.”
“If it’s raining, then I’ll do the home workout instead of running.”
“If I miss a day, then I’ll do the next session as planned — no making up, no guilt.”

These “coping plans” matter because every plan meets friction eventually. Deciding your response in advance stops one bad day turning into a bad month.

Examples for common goals

Goal	If–then plan	Obstacle plan
Strength train 3×/week	If it’s Mon/Wed/Fri at 6 p.m., then I go to the gym	If I’m stuck at work, then I do a 20-minute home session
Eat more protein	If I make breakfast, then I start with Greek yoghurt or eggs	If I’m out, then I buy a skyr or milk-based coffee
Better sleep	If it’s 10 p.m., then I dim the lights and put my phone away	If I can’t sleep, then I get up and read until sleepy
Less stress	If I sit at my desk after lunch, then I do 5 minutes of slow breathing	If I forget, then I do it on my next break

Your 5-minute exercise

Write down one goal for the next month.
Write one if–then plan for doing it.
Write two if–then plans for your most likely obstacles.
Put them somewhere you’ll see daily.
Track every day you follow through.

Common mistakes

Too many plans at once. Start with one behaviour; add more when it feels automatic.
Vague cues. “When I have time” isn’t a cue.
Overambitious actions. Make the “then” small enough to do on a bad day.

FAQ

How long until it’s automatic? It varies a lot between people and behaviours. Expect weeks to months, and don’t worry about missing an occasional day.

Does writing it down matter? Most studies had participants write their plans. It also makes them easier to review.

The bottom line

Decide in advance: if this happens, then I’ll do that. It’s one of the best-evidenced, simplest tools in behaviour change.

Sources

Gollwitzer PM, Sheeran P (2006). Implementation intentions and goal achievement: a meta-analysis of effects and processes. Advances in Experimental Social Psychology. doi:10.1016/S0065-2601(06)38002-1
Lally P et al. (2010). How are habits formed: modelling habit formation in the real world. European Journal of Social Psychology. doi:10.1002/ejsp.674

This article is general education for healthy adults, not medical advice. Check with a qualified professional before starting a new exercise or nutrition plan, especially if you have a medical condition. Full disclaimer.