The smallest useful change
Permaculture asks where to intervene for the largest effect with the least force. Applied to a person, it rules out almost everything people usually try.
Least force, right place, then wait.
A question borrowed from designing land
Permaculture has a habit worth stealing. Before adding anything to a piece of land, it asks where the smallest intervention would produce the largest effect, and it treats effort as a cost rather than a virtue. A swale in the right place does more than a season of watering, and does it without anybody turning up.
Applied to a person, the question rules out most of what people actually attempt. Almost every self-improvement plan is a large intervention in an arbitrary place, maintained by willpower, which is the most expensive input available.
Leverage, and where it is not
Three properties make an intervention high-leverage, and they are all unglamorous.
It is upstream. Something that changes the conditions of many later decisions rather than one outcome. Going to bed earlier is upstream of concentration, patience, appetite and exercise. A productivity system is upstream of nothing.
It holds itself up. The best changes stop needing to be decided. Keeping the bicycle by the door, deleting the app, buying the vegetables on Sunday: after the first act, the environment does the maintaining. Anything that requires a fresh decision every day is borrowing against a finite supply.
It is small enough to be beneath argument. The reliable changes are ones too small to generate resistance. A ten minute walk does not need motivating. An hour at the gym does, every time, forever.
Why the large version fails predictably
A big change has to be paid for in a currency that runs out. The first week has novelty in it, which is a real resource and a short one. The second week has only the decision.
This produces the pattern everybody recognises: six good days, a missed day with a reason, and the reason being accurate making it worse rather than better, because now there is a precedent and a story about being the kind of person who does not keep these things up.
The small version avoids this not by being easier to sustain but by having nothing to sustain. There is no daily decision to lose.
Finding the right place
Three questions, in order. They tend to produce an answer within about ten minutes, which is itself informative about how large this exercise needs to be.
What is upstream of the most things? Usually sleep, usually food, occasionally one relationship, occasionally one recurring commitment that costs more than it returns. It is rarely the thing you would name as the problem.
What would stop needing me once started? Prefer these. An environmental change beats a behavioural one every time it is available.
What is the smallest version of it? Then halve that. The instinct will be to add, because the halved version feels insufficient to matter, and insufficiency is the point: it is what makes it survive a bad week.
Then wait, which is the part nobody does
Least force, right place, then wait. The waiting is not passive and it is not optional: an upstream change takes weeks to show downstream, and the interval is exactly when people conclude it is not working and add something.
Adding something is how a small intervention becomes a large one and then becomes abandoned. The discipline is to change one thing and leave it alone long enough to find out what it did, which for anything upstream is at least a month.