Habits
Decide the swap before you're in the moment
Deciding once beats deciding nightly on willpower.
What it’s worth
One of the most reliable behaviour-change techniques there is
Do this
- →Name the moment precisely: not 'evenings', but 'after dinner, on the sofa, watching something'.
- →Write it as if-then: 'If it's after dinner and I want something sweet, then I'll have Greek yoghurt and berries.'
- →Choose a swap, not a ban. What you'll do instead, not what you won't do.
Why it works
Willpower is the weakest lever in the whole literature, because it requires you to be at your best at exactly the moment you're most depleted. An if-then plan moves the decision to a calm moment and leaves only the execution for the hard one.
The evidence
Implementation intentions are among the best-supported techniques in behavioural science, with a substantially larger effect for adding a behaviour than for cutting one — which is precisely why the swap framing matters.
The honest bit
Vague plans do nothing. 'I'll eat better in the evenings' is not an if-then plan, and it will perform exactly like no plan at all.
Knowing it isn’t the hard part
You’ve just read the tactic. The difficult bit is the Tuesday in six weeks when you’re tired and it’s raining. Milo is a coach you text like a friend: it knows which of these you’re working on, notices when it slips, and brings it up once rather than nagging.
See how Milo worksTry next
- Plate it, don't graze from the packet — The single most reliable environment change: portion out, then put the packet away.
- Eat without a screen, remember the meal — Distracted eating shows up later as more snacking, not less.
- Weigh yourself as data, not a verdict — Daily weighing helps, provided the number isn't allowed to mean anything about you.
General information, not medical advice. If you have a health condition, are pregnant, or are under 18, talk to a healthcare professional before changing how you eat or train.