It is better to have thoroughly mastered five tricks than it is to have partially mastered 20 tricks. If you can perform one or two tricks superbly and entertainingly, you are a magician. If you can perform many tricks but in an incompetent and uninteresting way, you are a boring bungler. Hey, a good bungle can be good for you from time to time, but do it when you're practicing - not in front of an audience.