Be self aware, rather than a repetitious robot
The height of cultivation always runs to simplicity.
The successful warrior is the average man, with laser-like focus.
The martial arts are ultimately self-knowledge. A punch or a kick is not to knock the hell out of the guy in front, but to knock the hell out of your ego, your fear, or your hang-ups.
Have no rigid system in you, and you'll be flexible to change with the ever changing.
One rule is to not use complicated techniques unless they are necessary to achieve your goal. First, use simple movements, and if they don't work, then introduce the more complex ones.