Your gonna need way more than drills,so practice. At first couldnt handle the ball and i thought that was my reason for sucking,but now i can since ive practiced dribbling by myself. Yeah it has helped alot but not enough. I can own kids who cant defend but people who can still have alot of trouble. The only thing i can say is play against really good opponents and practice(maybe 1v1 people). Also youll need speed if you want to be good. I can dribble well but its not that fast and people who are really good ballhandlers have told me that a few times. Youll need speed to keep the ball when your being defended up close unless your just going to control dribble so you dont lose the ball and that wont help since you wouldnt be going anywhere.