so when I started kickjitsu, I was a very angry person and that translated straight to my fighting style. I often rushed into sparring, threw vicious combos that functioned only to hurt my opponent (tight body hooks, driving leg kicks and sweeps, etc) and I was only a good fighter because I could take a hit BECAUSE of the emotional output into my fighting. i was a good fighter; being angry does improve your fighting but it also hinders it; your technique becomes brutal, your combos are short and don't flow, and you tire yourself out stupidly quickly. a year and a half on from that time, my fighting style has gone through some changes. i went through a period of not sparring between then and now, and seeing everybody else spar while I didn't was like the dentist playing with his needles before he sticks them in your mouth. when I got back into sparring i started to fight more defensively, and i could take less hits before deciding i lost the fight (a low point in my kickjitsu life ). as you probably guessed i was running less on anger now and more on technique and determination to win. it was training my technique over throwing everything into my training though (more precision jump kicks practice instead of explosive training and heavy muscular work) that helped me become the fighter i am today. my style today is a mix of offensive and defensive; i wait for my opponent to attack and then evade and respond with a feint to throw them off and then a light leg kick to head kick with the same leg, then move in tight with a boxing combo, push kick them away, etc. this more technique driven style over the explosive power i was putting in around a year ago has won me more fights and improved my kicks, boxing, takedowns and flow. it only FEELS like ive won less fights because my training back then was so different and much more explosive. moral of the story; you can run on pure anger for a while for fighting but eventually you'll need to calm down and focus on your fighting, rather than how best to hurt your opponent. the calmer fighter with the better technique can easily beat the angry fighter that throws everything into his attacks and tires himself out quickly. the same can be said for street fights; a blend of anger and technique could work here too.