This is not meant to be an advanced guide, just a little starter shielding technique.

1. First, shape a ball of energy in your dan tien.

2. Make this larger until it surrounds your whole body( don't forget to go underneath your body).

3. Visualise this hardening so nothing can get through it. I visualise it becoming a diamond-hard crystal, but you can do anything really.

This shield is basic and will not stop even an intermediate Psion, but any beginners who learn only to get revenge, it will. And, like everything else, it can only be improved.