If you engage in panicked hitting, you are too scared to start your swing. You panic because hitting is the weakest part of your game and you know it. You need to get a hit in order to play well. Visions of poor hitting days and strikeouts have you bewildered. Even if you gather yourself enough to take a cut at it, your muscles are too tense to make a smooth swing.
You not only needs to gain confidence back in your hitting, but you also needs to lose the fear that paralyzes you at the plate. As for confidence, you should set very small goals that you can easily accomplish at the plate such as seeing the ball well. Don’t focus so much on “getting a hit.”