Force yourself to dribble by feel!
Many athletes - even some seasoned veterans - tend to look downward at the ball while dribbling. This limits not only your court vision, but also your dribbling ability - because it depends on the fact that you are looking at the ball.
Even when you think you are not looking at the ball you may be. Dribble Specs restrict your downward vision - including your peripheral vision - forcing you to play by feel. Psychologically they change the way you play, helping you to concentrate more on what's around you, rather than what is underneath you.