If you hear a voice within you say “you cannot paint”, then by all means paint, and that voice will be silenced. – Vincent Van Gogh
Push yourself to do things that “you want to do” but have self-doubt about if you have the ability. Confidence will be gained with experience as you try & fail… or succeed. The key is to take action & face those challenges that you have uncertainty about. Don’t worry if you fall a few times. Turn that fear into motivation to test yourself.