You have to be willing to stop and fix. Deep practice requires a willingness to do what many of us find uncomfortable: to admit to our errors, and focus on them.
Daniel CoyleThe solution is to ignore the bad habit and put your energy toward building a new habit that will override the old one.
Daniel CoyleDeep practice feels a bit like exploring a dark and unfamiliar room. You start slowly, you bump into furniture, stop, think, and start again. Slowly, and a little painfully, you explore the space over and over, attending to errors, extending your reach into the room a bit farther each time, building a mental map until you can move through it quickly and intuitively.
Daniel Coyle