As previously suggested, practice is the only answer. Practice the form until the swing can be expanded to provide power plus drive, then practice again to reduce the form to the delicate touch that is required on the putting green.
There are, however, a few suggestions that may aid in the various shots.
Driving
Even though distance is always desired on tee shots, train yourself not to force or press-the added length of the shaft automatically develops more power through the increased leverage this extra length provides. Remember, however, that the extra length of the driver will require extra time for it to reach the top of the swing and extra time to get back to the ball, so learn to cultivate a lazy type of rhythm when using your driver.
If you are out of practice, keep your #1 driver in the bag, and use your #2 driver for your tee shots. The added loft of the #2 club will absorb slight errors of mistiming that could prove disastrous with a #1 driver.
Beginners are advised to use the more lofted drivers first. As your swing improves, you can move forward to the less lofted clubs.
In striving for distance, take care not to grip the club too tightly as this will destroy the needed hand action. Also, don't spread your feet and take too wide a stance, because that will destroy footwork and without footwork there can be no balance, hence no power.
Iron shots
Again, the first thing that comes to mind is "Dont Press." Be sure to select the club that will secure the distance needed. All good golfers play within themselves, which gives them that extra added punch if the occasion requires it. continue golf clubs and the three departments of play...