Remember, stretch before every workout.
Drop the club at your feet so the shaft runs from foot to foot. Look down and examine where the club is pointing and make adjustments. Imagine the club making a line to out to the target. If that line is to the left of the target, during a real golf shot, your ball will end up to the left. If the club's line is to the right of the target, then your ball will fly to the right of the target.
To correct, aim slightly left or right of your starting point, depending on the direction of the error. For example, if the club line is pointing to the left, adjust your stance slightly to the right and repeat the drill.
Do this drill regularly and you will see a noticeable difference in how you address the ball.
To perform this drill, take a club and swing about half your typical speed. Stop when your arms make a L during the backswing and check where your wrists are. Swing through and release, turning your wrists through the ball and finish by creating the reverse L as you follow through.
Continue swinging in this manner, but increase the speed. You will become more cognizant of these two important points in the golf swing while noticing increased power.
If the desired ball flight is not occurring while you're doing this drill, adjust your grip and arm angle. These should be slight adjustments that the individual golfer will need to experiment with, because it depends somewhat on the strength of the grip and velocity of the swing.
During the adjustments, continue to do the drill and test different arm angles and grips. This will help the golfer understand the relationship between club head, wrist motion, arm angle and grip in his own swing.
This drill will help the golfer expose an inconsistent velocity issue with his/her swing and body. If the body is slightly ahead or behind the golf swing, then the ball will be sliced or hooked. This drill will break this timing issue by making the golfer's body move at the same time as the club.