Sometimes you have just jump in and do it - whatever 'it' is - way before you are ready. You don't know how to do it. You're scared shitless, and you feel unprepared, but you just have to get on with it anyway.
Otherwise, that perfectionism is going to kick in, you start to procrastinate, and before you know it, it has become a thing, a block. Waiting until you’re ready is just perfectionism in disguise and the only antidote is ACTION.