Be PATIENT and Selective.  Do not be afraid to wait on the ball.

Have a PLAN at the plate.  Think about what you are trying to do, but try not to force anything.

POSITIVE Frame of Mind.  You have to create in your own mind positive self talk all the time.  Say Things like "I'm about to drive this ball in the gap. or " I CAN hit anything this guy throws."

L.I.G. Attitude.  LET IT GO!  If you have a bad at-bat or boot a ball in the field It's very important to forget about it and say something positive to yourself immediately like "I'm going make that play next time" or " Next time he throws ME that pitch I'm going to drive it back through the middle."

VISUALIZATION.  You have to know what success looks like in your mind first.  You know how they say Seeing is believing. Well how about seeing and constructing in your mind vivid scenes of you doing AWESOME things on the field and replaying them over and over. Its almost like you know exactly whats about to happen when you find yourself in a real situation. Your success won't come as a surprise to you. Because you've seen that movie before.