The lightness of your step relates directly to the lightness of your energy, emotions and thoughts and vice versa, though lightness does not mean airiness. Every footstep must make intelligent contact with the ground.The soles of your feet are important receptors which collect information from the ground.
Extension and contraction, opening and closing, should be natural.
From the Song of the 13 Postures
Do your best.
Make a little progress everyday.
Don’t overdo it.
After a long and hard search everywhere,
find the treasure
at the doorstep