It's not hard in concept. But you have to want to play "d". I always say good defensive teams play with an edge and energy in any sport. It's not as easy as staying on your man and hope for weak side help. Then hope they recover. It is as easy as saying if they play balls out effort defense good things will happen. And you don't always have to over play the passing lanes and try for steals every possession. Play solid d and let their offense make the mistakes and capitalize. And for god sakes buck up and play physical basketball