https://rhaas.blogspot.com/2024/05/hacking-on-postgresql-is-really-hard.html

As far as I can tell, everyone who works on PostgreSQL struggles to write code well enough to live up to the project standards every time they sit down to write a patch, and even the very best hackers still fail at it from time to time, in small ways or sometimes in large ones.

…

I’m not sure how other people experience it, but for me, the worst part of it is the realization that I’ve been dumb. Had I only done X or tested Y, I could have avoided messing it up, and I didn’t do that, or at least not correctly, and now here we are.

Honestly, how I feel even on projects much, much less important than PostgreSQL.