I'm not learning from my mistakes

My name is Matt C. and I need help.

I play a lot of videogames competitively, and I get pissed off because of it. I feel like if I screw something up, someone is going to tell me that I suck. However, I have never heard anyone tell that to me but myself. If that does not make sense, if I screw something up that I could have fixed or avoided, then I will punish myself, whether it be calling myself an idiot, dumbass, etc. or slapping myself in the head. After some time, it evolves to screaming my head off at my monitor and breaking items.
For example, today I was playing some Super Smash Bros online, and I was getting myself handed by the other player I was playing against. I got so pissed after I lost that I slapped myself in the head so hard that I broke the headset that I was wearing.
Then it evolved to throwing my headset at the wall, and then breaking any other items that produced sound so I couldn't hear anything from my monitor. I then got lightheaded from all the stress I was getting from that event.
This is not the first time I've been doing this. It has been something that I've been doing since I could remember, and I have no idea what is wrong with me. I keep doing it, but I am not learning from my mistakes. If I can get an answer for why I am being a" psycho" for when I get pissed off, that would be wonderful.

It sounds to me like firstly you need to probably take a break from the video games. Are these the only things that set you off? Also some anger management techniques might be good for you.