Ask HN: How to deal with OCD/decision paralysis?

I suffer from bouts of OCD that cause me to get stuck on small decisions that I spend far too much time researching and debilitating on. Some examples include:

- Spending too much time deciding what to name my source code directory/home directory layout.

- Spending two days deciding if I should put personal scripts in my dotfiles repo or make a separate repo and agonizing over whether my dot files should assume they are bundled with my personal scripts.

- Rewriting a script/code several times because it doesn't "look" good to me (doesn't visually seem as well written or professional as other code I've read). Spending hours studying every example on the Internet to figure out the exact "right way" to code help text.

- Figuring out where to store patches, what to name git branches, how to write commit messages for small projects.

- Agonizing over color schemes/aesthetic choices.

I have always done well as a software engineer through bouts of extreme productivity, but I then sink into these moments of despair where I'm held back from working on the bigger fish projects I want to work on by my neurotic traits. I'm wondering if any of you suffer from the same issues and have found effective coping strategies. I have tried therapy, but it wasn't effective in changing any of my work behaviors.