How Much Do I Keep Myself Back From Doing Things?

I wish i had worried less. I've spent a good amount of time worrying about not being good enough, and that fear keeping me back from trying things because i was so afraid of rejection and failure. It's taken a long time to learn that, and i'm still struggling through that. How much do i keep myself back from doing things, as opposed to lack of opportunities? And how do i clear away the vestiges of that repetitive pattern behavior? Do you feel like you know something now? Like you finally solved the puzzle?"