Borrowing from anger management
A technique that anger management teaches is have a plan when you are calm to keep you calm when you know you are going to be triggered by events. I use that for my golf game and it works great. I no longer have tantrums after bad shots. I have conditioned my mind to process them as learning events. My relationship with my wife has slowly evolved from feeling like I am visiting a sick friend to babysitting a hyperactive child. In the morning I am cool calm and collected. By the evening I am an emotionally fragile mess from trying to manage a whirling dervish of mayhem and I have been snapping and losing my cool. My plan while I am calm to handle that is to just take a deep breath and say "let it go". If she thinks she is helping me in the kitchen but she is actually creating more work instead of visualizing putting her in a big play pen I just take a deep breath and say "let it go". I am exhausted from trying to stop her. She can't hurt herself or lose anything that cannot be replaced or make a bigger mess than what is already there. So take a breath and just let it go until she gets tired. What I have learned from Stoicism is we learn about ourselves through adversity. I don't like the person I become when I am frustrated. So in order to change that person I have to reprogram how I process frustration. So now it is a learning experience on how to do that. I get to practice every every day.