I think the most important thing in all of this is that you found a pre shot routine that gives you confidence. That is priceless and no amount of lessons can teach you that. Remember that tee shot on 11 if things aren't going your way and keep with the same pre shot routine. As long as you are thinking calmly and clearly when facing a difficult shot or you've duffed the last 6 shots, you can still approach the ball confidently if you perform the same routine and paint a positive mental picture.