How do you manage not to hit your kids?

Okay, I would absolutely NEVER do that. I’ve always been against violence, corporal punishment and all that and I’ll always be. I know it’s not only unhelpful but also damaging.
On my days, though, that physical urge I get to smack my son is so strong and awful! I hate myself for feeling this way even though I know that I’m not in control of my feelings, only of my actions and I don’t act the way I feel..

My son is 3,5 and so much energy and so little impulse control it’s driving me mad. He will let out a super loud and high pitched scream while I am driving or first thing in the morning when I am making his milk/my coffee and it’ll send my heart racing for a while.

I struggle to regulate my emotions towards him and because I don’t want to act them out, I feel like in imploding.. does it get any easier?