The dreaded shanks. Unless you cure them, they can go into remission for a year or so and then resurface with a vengeance. I've gone to a number of teachers to learn how to permanently rid myself of the shanks. I even took lessons from a Golf Digest top 100 teaching pro and he wasn't able to do the job, and then I came across an article on pga.com by Jeff Obst that did the trick
http://www.pga.com/improve/tips/swin..._obst02204.cfm. I recommend this article to anybody who has experienced the shanks (because I know how frustrating they are!). By thoroughly understanding the path of your hands through the impact zone you will start to have a good sense of controlling your club head. By using tape on the face when you practice and experimenting with the hands through the impact zone I'm confident you will start to gain a feel for the club head and where you are striking the ball on the face. Once you have this feel you will be able to avoid hitting the ball towards the heel, especially on the hosel!! I followed Jeff's recipe by ensuring my hands crossed over the right foot on the take-away and crossed over the right foot on the down swing (I also recommend you begin hinging your wrists as you take-away to prevent the dreaded flat, below plane, take-away). The hands then remain parallel to the target line during impact and cross over the left toe after impact. It will start to give you confidence that you actually are in control of your swing (and you don't have to be thinking of a millon swing thoughts). The shanks can be cured!!