You are not wrong there my friend
I have been on very good form just lately and a week ago in horrible weather came runner up in a society away day with 38 points.
I played in a club medal yesterday and was full of confidence on the way to the course. I had my normal half hour practice on the putting green then a warm up in the nets. I started hitting some easy 8 iron shots and immediately started shanking them into the corner of the net. Not a good omen
I then shanked almost every iron shot around the course. I just could not stop them and was not able to find an on course correction. I turned in the worse score I have for many years and am too embarrassed to say what that was
Today I went to the range to carry out a post mortem and figured out the problem almost straight away. I was allowing my upper body to get ahead of the ball through impact forcing the clubface to come in wide open thus exposing the hozel to the ball causing the "socket rockets". After a short practice keeping my head and chest back while allowing my hips to transfer weight to my lead leg and I was creaming the ball down the range. This was the first time I can remember doing this and am frustrated that I could not see the problem yesterday

I guess the tension of competition can get to any of us at times.
Ah well, "Ce La Vie"