Learn to protect your weakness during a match

Most players have at least one shot they are not confident about hitting in a pressure situation. Of course, you should take lessons and work to improve your weak shot. But play smarter in 2011 by learning to protect your weakness during match play. For many recreational players, it's the backhand that breaks down under pressure. You can't avoid hitting some backhands during a match, but until you develop a consistent, reliable shot, there are some things you can do to protect your weak backhand. 
First, when you're serving to the deuce court (if you're a right-hander), stand right in the middle of the court and serve to your opponent's backhand.  Then be prepared to step quickly around your backhand unless your opponent hits a fast return down the line.
Next, when you're serving to the ad court, move way over to the sideline and serve your opponent out wide.  That not only cuts off all but the most sharply angled return to your backhand side, but the tempting return to the wide-open court is to your forehand strength.
When you are receiving serve from either side, move over a little bit to your left to protect your backhand, but be prepared to cover a serve out wide to your forehand.
Finally, during rallies, give your opponent high bouncing balls deep to the baseline.  Then no matter how he returns the ball, his shot will take a long time to get back to you, giving you a chance to run around it and hit your stronger forehand.