How many of you have either copied golf drills from online lessons, youtube videos or have even gotten some lessons where a coach gave you some sort of drills to work on? You would probably agree that for the time being, it may work to some degree but then notice that when you take your normal swing after your regular setup, you are unable to replicate the good shots that you would do with the drills? I see time and time again even in my own teaching that students are only able to do the drills yet they cannot translate it to to their normal swings.
Lately, I have been having a significant amount of success upon having students try to focus on what body muscles they are feeling at work when doing the drills. See, drills (the correct ones) are designed to force you to get in to positions that you normally would not get into: for example, the right foot back drill is there to help you get your hip depth on the backswing, the step drill is there to help you transition correctly, the Hogan drill is to help your grip it better with your trail hand, the L to L drill is there to get your wrists to start hinging correctly... and the list goes on and on. However when people do these drills they fail to incorporate it properly into their normal swings.
The key to making drills successful is to be aware of the muscle sensations they are trying to make you feel. Remember, be specific. Do you feel your lead arm or you trail arm taking the club back, is there tension in your left lat or your right lat? When are you feeling a pressure shift, early or late? Are you feeling more tension in your right wrist or left wrist, etc.
Pay close attention to how these feel from a musculature perspective because chances are that when you take your normal setup to the ball, you are already predisposed to fire the same exact muscles you've been firing in the past and that is why your drills are not effective.
Many times I tell my students, "If you're doing it, you're not, if you're not sure you're doing it, then you're still not, but if you feel ridiculous, then there's a slight chance you are."