Live Pitching Troubles

Question
Dear Expert,

I have a really big problem concerning hitting. I'm 15 and am trying out for JV baseball this year as a sophomore. I play the field well as a utility infielder with a good arm and pitch well, but I seem to have a lot of trouble with hitting against live pitching.
I know I'm not a bad hitter, as i work out with a weighted bat almost every night and have great bat speed, but i just can't seem to figure out how to hit against carbon based life forms. When I'm in the cages I hit very well with power, but I seem to only make weak contact (grounders and short flies) against actual pitchers. I even have a problem with soft toss.

I really need to figure out what's wrong quickly, because tryouts are nearing and if i don't straighten myself out at the plate in time, I'll never make it.

Do you have any tips on how to overcome this psychological barrier? I know it's nothing mechanical or anything, as my dad (a former Single A center fielder) has told me that my swing on deck looks flawless. I've come to you guys as my last hope. Please give me some advice so I can make the team.

Much appreciated,

         Dylan

Answer
Dylan I would have to say if you think your swing is good then it comes down to your swag. Get your swagger meter up. You have to go to the plate feeling like you have prepared yourself well in order to shine. Believe that you are the man and go up there and attack the ball. If you get out get them the next time. But you have got to believe in yourself. Stand in the mirror and tell yourself how good you are.