I need help with a habit i cant control?

[Jhon]

when i was a little kid there were alot of bad things happening around me so i would start rocking back and forth it was my comforth place because it was the only thing people couldnt take away from me but im 15 and it grew in to me lissioning to music while i do it and weel i love every min of it it makes me happy but i have to stop because its really bad because its takeing alot of time homework social life which i dont have any more so i have to get rid can some one please help me