I suffer from some sort of condition, don't know what it is, i just cant put my finger on it. So i need your help to diagnose it so i can do something about it. It's height related, i'm fine flying, parachuting, fine doing ramp riding! However if i go up a ladder, rock climbing or on the catwalk on an assault course my legs turn to jelly and i cant move. Its embarrassing,whats up with me?