"You don't have to be great to start, but you have to start to be great!"
The biggest dream-killer isn't failure; it’s the idea that we have to be "ready" before we begin. Readiness is a myth. You learn by doing, you grow by failing, and you improve by iterating. Your "version 1.0" is supposed to be messy.
What is one thing you’ve been waiting to start because you don't feel "expert" enough yet?