Stop renting mental space to people who would never help with the cost.

Some people occupy an enormous amount of your thinking without contributing anything to your life, and often without knowing they are there at all. The occupancy is entirely yours to grant or withdraw, which is both the frustrating part and the useful part.

Notice who you argue with in your head. Then interrupt it when it starts, deliberately, by turning to something physical or specific. The habit weakens surprisingly fast once you stop feeding it.