What to do about a lack of confidence?

Here’s my dilemma. Opening up, seeking some real advice here. Hopefully this will help me and others too. There has to be someone else in this boat.

I have hobbies and skills that I could pour into the mix and possibly make some extra side finances. I also, however, am a perfectionistic over-thinker with self-doubt to some degree.

As a for-instance, I can solder fairly well and have a knack for electronics and how stuff generally works - this isn’t entirely unique, but not a skill everyone has. I love modding and upgrading and repairing things on the component level. My issues with this are, if I’m selling my end-result, will it ever be good enough to meet my own personal standards? What if someone else puts my work under a judgmental microscope? If I’m selling tutorial videos or guides, same thing. What if they’re just not good enough? Could they ever be to meet my personal standards?

How did you get over this hurdle of self-doubt? It’s probably the one thing holding me back at this point.