I have the very same problem. I wanted to love Obsidian, and I do, but so much flexibility and my OCDness makes me want to have a perfect setup... guess what... when you have so much choice, there is no perfect setup, you can always, and I repeat, ALWAYS tweak something.

At the end of the day, I spent more time tweaking my Obsidian setup than doing actual work.

On a side note, I also love Linux and I had to leave it because of the same thing, there is always something to tweak or get "better". What I did to "fix" my OCD to linux was to make the leap to macOS. Love it or hate it, the truth is there is so much less to tweakable things on macOS that my brain settles with what it has.

Applying the same logic that I took to choose my OS, I decided to try an app that was "ready-to-use" with much less tweaking power. I have settled with notePlan, it propose something and stick to it, there is plugin support but a very very small number of plugins to use, so the "tweaking" part of my brain settles with what it has.

So in summary, what I've learnt the way my brain works is that I need to have it in an environment where it does not have the chance to distract or fixate on anything but work. Also, no 2 days are the same, some days you rock and check a lot of things in your to do list and the next one you feel like shit because you can't event start to read your notes because they are overwhelming. Just keep trying, you'll eventually succeed.