This is a really complicated topic but as with all things, habit is definitely key. I recently discovered https://www.enki.com/ and absolutely love it for this.

In addition to that: imposter syndrome can get in the way of writing code. There's lots to be said about getting over imposter syndrome, but it's not that easy. If this is something that affects you, I can highly recommend a psuedonym to help you interact in IRC and other feedback channels.