He’s so extra

So I’ve known my bf since high school and now we’re finally dated now that I’m divorced. I have a 6 year old so who he loves a lot. But my bf has temper problem.

I want to say he has NEVER hurt me or my son but he does petty things like break shit or drive recklessly. Sometimes it’s overwhelming and I just walk away. I love him to pieces but sometimes idk how to handle it. I get more upset that he break things I’ve paid or for put a hole in the wall. Any suggestions on how to work on this or work on how he can take a chill pill without seeming controlling?