Recently I was reminded the Derek Sivers post that has stuck with me for years: No “yes.” Either “HELL YEAH!” or “no.” The idea is that too often we say “yes” as it’s the easy answer even though we don’t feel strongly about. Too many “yeses” and there’s no time for yourself and the important priorities.
When it isn’t worth your time, just say “no.”
When you’re not passionate about it, just say “no.”
When you have more pressing priorities, just say “no.”
When life feels overwhelming, just say “no.”
When you’re super excited and want to do it, just say “yes.”
The next time someone makes a request of you, ask the “heck yeah!” or “no” question.
David Cummings on Startups 