Footwork. To be able to punch or kick with speed you must be able to move your body quikly. This starts with the feet. Then repetition, bag work, shadow boxing and finally sparring. True speed isnt when you are hitting a speed bag a hundred times but soft as a feather, rather true speed is accomplished when you are able to perform a technique properly, under pressure, with positive result.
"When I let Go of who I am, I become who I might be."