Coin Flip Rule: If I think about a tough decision for too long, it's a sign that the decision may be tough because the choices are really close and additional thinking is likely not worth it (the added value of making the "correct" choice will be very small). In this case, choosing at random is OK.

Just start: If I feel unmotivated, I'll wind up a Pomodoro timer and just try to knock out one. Usually, I will feel a lot better/more motivated once I get going on a task.

Stupid/evil rule: If I disagree with someone, I recognize that I will often shortcut this to the other person knowing less than I do, or to having ulterior motives. When I see I am doing this, I ask why they might disagree, other than explicitly being stupid or evil. Since people are very rarely stupid or evil, this helps me to understand the perspectives of others.