RE: How to break a bad habit?????
You have to develop a shot routine.The routine starts when you start looking at the target.Do the same thing EVERYTIME.If something distracts that routine,START OVER.
You must practice this way also.
This is like a free throw shooter that takes the exact same amount of bounces before he shoots.
A backtension release would also be a great practice aid for you.That will slow down the shot sequence and promote a great release.That will take extreme dedication on your part but if you do it,you will be better for it.