"IMMEDIATELY OR NOT AT ALL"
"This concept is very simple, but few good players understand the importance of it. If you decide to go one-on-one, do it immediately after you get the ball, or don't do it at all. There is a very good reason for this. The longer you hold the ball and look around or jockey for position, the more time the defense has to get in good help-position to stop you and clog the lane. If there is an opening to go one-on-one, your best chance is immediately, not after you hold the ball for several seconds.
The same concept applies to taking a shot from outside. If you are free and in your range, take a shot. If you aren't don't take it. But don't stand there deciding then shoot. Anytime you have stood there deciding, decide not to shoot. Why? Because tentative shooters are poor shooters. If something about the situation causes your instincts to delay, something about your instincts is likely to disrupt the smooth flow of your shooting motion.
A good rule to follow is this: when in doubt, pass. Or, if you have held the ball, pass. Seldom does a team lose for having passed up open shots. You lose by missing shots, by shooting too fast, by taking bad shots, and by shooting tentatively. Passing up a shot rarely hurts, and it often helps.
The players who take the scoring initiative should be those who know at the instant they get the ball that they have an opportunity. If they do not have one, they should take it immediately or not at all."
-Excerpt from STUFF! good players should know by Dick Devenzio