I developed a bad case of perfectionism-procrastination after working for a toxic boss.
It didn't matter how polished our product was, he'd find a way to tear it apart. When he'd have a bad day, he'd start picking apart a random team's product. "Unbelievable!" he'd say in Slack, dropping a screen recording of the app that showed something we were supposed to be embarrassed about. It could be that the app took 3 seconds to load and show fresh data from his hotel WiFi, or it could be as simple as the UI not matching some directive he gave to the UI designers who failed to update the designs or tell us about the change. He would rant about how disappointing we were. At his worst, he fired some people on the spot for a problem that wasn't even their fault.
I quickly learned that the only way to avoid that pain was to not ship anything. The people he liked most were the ones who were operating in hypotheticals: The people who made UI designs in Figma, or the architects who drew nice diagrams about how things would work, or the people who wrote long design documents to hand to other teams. They never shipped anything for him to critique, so he thought they were the geniuses of the company. As long as they could avoid having to actually implement anything, they continued to be favorites.
It took me longer than I like to admit to shake that habit when I finally escaped. I found myself delaying shipment, pivoting from design doc to design doc, and trying to operate in that hypothetical space as long as I could. Fortunately I learned to get over it, but it was scary how much that single job could shape a large part of my personality.