Every part of golf from hitting a 6ft putt too hitting a powerful drive needs balance. Balance is certainly a fundamental that is overlooked by so many.
This simple exercise, performed daily will help you improve your balance in the golf swing, making all parts of the game easier.
http://www.mytpi.com/exercises/#single_leg_balance_golf_stance
I like to balance on each leg for around 3 minutes. Perform this exercise daily along with other simple exercises like balancing on one leg in standing posture.