I remind myself that I have no idea what other people are thinking - only what I think of their actions, the signals from my senses. That may be a weird way to work, but for whatever reason it helps me slow down and reason more carefully about the nature of situations.
As for my own habits, I find concentration and focus addictive. I don’t burn out from thinking deeply and working on intricate solutions. The more I do the better it feels and around the spiral I go. Unfortunately the further I go the less “room” is available for other, often more important, things. So I’m also constantly reminding myself that my brain is a machine that adapts so I need to be careful how I use it. If I train my brain to resist certain tasks by rewarding it for avoiding them, it will become harder over time to perform those tasks. And vice versa.
Brains are fun. :)