As a software developer, some problem I was working on during the day occasionally pops back into my head at night, usually around bedtime like that meme with brain talking to the girl. I used to fight it, thinking hey they’re not paying me for this. This is my personal time.

But over the years, I’ve realized it’s best to follow through on the train of thought until it resolves somehow and I know what to do tomorrow. Then I get a good night’s sleep. I think of it as kind of an occupational hazard at this point.