Parents, what do you do when you feel like you want to explode because your child is too hard headed?

I would take a deep breath, ask someone else (maybe my partner, my parents) to watch my child for a few minutes and take a break. I will definitely not engage with anyone let alone a child when I'm at my wits end because I know it will not end well. I might say or do something I will regret so I will walk away temporarily.