Zazen is simple to learn but can be difficult only becuase most people find it hard initially to clear their minds.
See http://www.mro.org/zmm/zazen.shtml for instructions.
There are other various mental techniques for self-defense such as
* White light visualization for self defense and protection
* Mentally zipping your opponent down from the lower lip to the abdomen, and/or visually retracing major meridians backwards to induce energetic weakness
* Use of the "Direct Flash" technique written about by Theron Q. Dumont in his books to manipulate your opponent's thought fields
* etc...
shr33m
