My favourite sport.

I have been playing basketball since junior high school as a hobby. When I play basketball, My feel happy. I don't know why. But I'm positive that I really enjoy it. Especially, a sound that throughing the ball in a net is my the biggest of reason what i begin play basketball. That sound make me very exiting and crazy!
May I'm in a holic.
I'm going to stop this favourite thing!

CORRECTION:

My Favourite Sport

I have been playing basketball as a hobby since junior high school. When I play basketball, I feel happy. I don't know why but I'm positive that I really enjoy it especially the sound when throwing (or shooting) the ball in the net. That is the biggest reason why I began playing basketball. That sound makes me very excited and crazy!

(May I'm in a holic.
I'm going to stop this favourite thing!) ---> 기분 나쁘게 생각하지 마세요 but I really didn't get this part.

My favourite sport.

I have been playing basketball since junior high school as a hobby. When I play basketball, My(I) feel happy. I don't know why. But I'm positive that I really enjoy it. Especially, a sound that throughing the ball in a net is my the biggest of reason what(why) i begin to play basketball. That sound make(makes) me very exiting and crazy!
May I'm in a holic.
I'm going to stop this favourite thing!