The following are a few simple tips that can truly help any level of play. My tips are simple and can be applied with or without a coach. 

You cannot prepare soon enough- turn your hips and shoulders before the oncoming ball bounces on your side. GET THAT RACQUET BACK! 

The majority of all people, no matter what sport they play, can improve by following through when you get a little nervous or your opponent is in control of play and moving you around.

Exaggerate your follow through; do not think just hit the ball. MOVE YOUR FEET!

Whenever you rally, wherever you play, make up your mind that you will never let the ball bounce twice. Always run for the ball even if you think you have no chance to reach it.

Richard Williams told Venus and Serena when they were six and seven years old, "Don't think, just run and hit the ball."

Try playing on a court with no lines, whatever comes to you, it is in play. 

So many players will hit a ball and watch the ball and compliment themselves on the shot. From now on you must hit and recover. 

I suggest you watch the pros- it actually looks like the pros are recovering in the middle of their hit. I don't suggest going to that extreme. Just hit, finish and get back to position.

I want you and your practice partner to start at the serve line but stand in between the singles and doubles lines. Rally or play points hitting only between the lines. 

As you gain confidence, move back further until you are on the baseline. It's critical that you have a solid foundation and complete balance in order to hit between the lines (also early preparation).

So many players will overplay the ball, including playing the lines. 

Vegas spends billions of dollars building casinos. Why? The majority of gamblers do not play the odds, they go for it and they lose!

There are so many opinions on when you talk, how you talk, and what you say to your player after a practice session or a match.

There are no two people alike, you have to adjust your method to fit the student's personality.