work on things that are hard for u. usually, its hard for people to dribble behind their back for a long time so work on it until u can do it for a while. thats jus an example. do alotta drills that u think are hard at first and perfect em. also, try dribbling wit tennis balls like u would a basketball. and try to dribble as hard and quick as u can. fast handles are a huge advantage.

above all tho, dont give up cus u can make progress everyday. its all in the attitude