Well Alex, i would say that your assessment of your personal 'problem' is well founded and honest. Nearly all golfers, at every level, suffer the confidence insecurity you speak of, so it's nothing new. But how to address and solve that problem is not easy at all. Seems to me that confidence can only arise from positive personal experience and not from any 'intellectual' knowledge. Who can play the piano by reading a music book? And who can skillfully play any musical instrument without many wrong notes along the way. Certainly good golf technique is a must but there is no absolute formula for that either, look at the variable swings on the TV. Practice and play, especially under demanding conditions will help. Demanding conditions like tournaments and money play. Lee Trevino, mostly self taught, learned self-confidence by competing for money when his own pockets were empty on the first tee box. Your desire must overcome your fears and each man is different.