Build quietly enough that your results have to introduce you.

Announcing plans spends some of the satisfaction you were going to get from doing them, and it also invites opinions while the thing is still fragile. Building quietly protects both the energy and the work, and it means that when people find out, they are meeting a result rather than a promise.

Take something you are working on and stop talking about it for a month. Notice whether the urge to mention it was about the work or about how it makes you look. Let what you finish do the announcing.