Take what's useful, discard what is not.
From form to formless and from finite to infinite
The highest technique is to have no technique. My technique is a result of your technique; my movement is a result of your movement.
It is true that the mental aspect of kung-fu is the desired end; however, to achieve this end, technical skill must come first.
Concentration is the root of all the higher abilities in man.
When you fight, if it is a real fight, use every tool that you have, use your whole body. Use your fists, your legs, your fingers, your head if you have to, and hit them in every vulnerable spot, the balls, the eyes etc. to win.