Know how long your fuse is. People with short fuses who know it can plan around it.

Having a temper is not the problem. Not knowing when it arrives is. Most tempers run on a schedule: late in the day, after a bad practice, when you are hungry, when someone interrupts you twice. Once you can name the pattern you stop being surprised by yourself, and that is most of the fight.

For the next week, note the hour when you snapped at someone, even quietly in your head. Look for the repeat. Then put the hard conversation somewhere else on the clock.