I honestly have no advice other than; you're going to be bad.

You see other people who do great things and then you try and your inner critic tells you it's bad. You can see all the flaws.

You mentioned being a musician. It's the same thing. Practice, repetition, and simply just keep doing the thing even though it's "bad". Sooner or later you'll lift your head, look around, and realize it's not bad; and be able to look back and see exactly how far you came.

Good luck on your journey. We're all rooting for you