Yesterday i had serious anger control problems and did really bad in my sports event!! Still cant believe it! Please help?

Ok, the sport is discus throw and i could easily get the third place. My first throw was really good but unfortunatelly my left foot slipped and got out of the circle.My throw didn’t count. I got REALLY mad, obviously i have an anger control problem. My second throw was also the same as the first. I became more angry! Seriously i was out of control, i went and sat alone in a corner, i felt that i was going to faint. Anyway i decided to throw without the spin, in order to continue (at three faults you leave). I threw the discus and hit the net!! That was ofcourse of my anger that couldn’t think clearly.. Can you suggest something for my anger control? Sorry for my english if i made any mistakes.