Trust me, I was the same way at one point. I was hitting the ball decent before any lesson whatsoever. I was scoring in the high 80s to low 90s. I went to a 3 pack of lesson and I got progressively worse! My swing became mechanical and I was so frustrated that I contemplated quitting the game all together. I couldnt break 110. My short game was good, but my iron play was absolutely atroscious. I had the shanks and everything in between. It was pitiful. I took a few weeks to a month off and went to a different instructor. After one lesson and a nice video analysis, I feel much more comfortable and I am hitting the ball better now than ever before.