While small might not be sexy, it is successful and sustainable. When it comes to most life changes that people want to make, big bold moves actually don’t work as well as small stealthy ones. Applying go big or go home to everything you do is a recipe for self-criticism and disappointment.

When you rehearse in Tiny Habits, you are both training muscle memory and rewiring your brain to remember. And you can drill and wire in a habit quickly if you have an effective celebration.

The feeling of success is a powerful catalyst for change. Your confidence grows when you celebrate not only because you are now a habit-creating machine but also because you are getting better and better at being nice to yourself. You start looking for opportunities to celebrate yourself instead of berating yourself.

Success leads to success. But here’s something that may surprise you. The size of the success doesn’t seem to matter very much. When you feel successful at something, even if it’s tiny, your confidence grows quickly, and your motivation increases to do that habit again and perform related behaviors. I call this success momentum. Surprisingly enough, this gets created by the frequency of your successes, not by the size. So with Tiny Habits you are shooting for a bunch of tiny successes done quickly. Not a big one that takes a long time.

Seemingly small steps, changing one project at a time, create momentum. Social scientists have argued that a strategy of “small wins”—making quick, opportunistic, tangible gambits only modestly related to a desired outcome—is in many instances the most effective way of tackling big problems. Part of the reason small wins can produce much bigger results than a grand strategy is psychological: Defining a problem as “big and serious” can make us feel frustrated and helpless and therefore can elicit a less creative (or more habitual) response. We become paralyzed. We make the wrong move just to change. When we see change as requiring “big, bold strokes,” we amplify our fear of it; we overcome this fear by putting one foot in front of the other, in a series of safer steps.

Small wins are also great ways to learn and to enlist supporters. Negotiating both a good fee and mostly remote work on her first consulting contract, for example, helped Susan discard barriers and discover resources that were invisible to her before. One small win in itself may not seem like much; a series of them increases the likelihood of serious change by setting in motion a dynamic that favors a next step and makes the next solvable problem more visible.