Stand on one leg and start to move in a circle in one spot keeping yourself upright or finding what happens when you do not.
Next move on one leg without leaving the ground in a straight line back and forth learning to relax the focus in the eyes and to avoid tension in your movement.
Next squat down a bit on one leg to a quarter squat and repeat the drills written above
Squat half way and repeat the drills
Close your eyes and repeat the drills
Stand on one leg and have a partner move you gently (using either a blade, a stick length or a fist and touching everywhere) and you move without moving your leg off the ground as much as possible and focusing on your breath
Next repeat the drill with you moving as little as possible.
One of the best reasons to smile is that it relaxes the whole body and the mind. Remember that you have emotions but you are not the emotions.