Emptiness is a difficult to understand, and a vastly misunderstood notion, and remains an enigma. Seen from a practical perspective, why would you want emptiness? Find what emptiness really implies, and how it is a pointer to Reality.
On the spiritual path, we are always on a quest for achieving this and achieving that, with the hope that one day it will result in the achievement of enlightenment. But enlightenment is not an achievement! Where does that leave all your activity, your frenetic doing? What you may be missing is the secret of relaxation.