From Carlos Castaneda's
The Second Ring of Power
What is the art of stalking ?
A hunter just hunts, a stalker stalks anything, including himself. An impeccable stalker can turn anything into prey.
We can even stalk our own weaknesses. You do it in the same way you stalk prey. You figure out your routines until you know all the doing of your weaknesses and then you come upon them and pick them up like rabbits inside a cage.
Any habit is -- in essence -- a doing, and a doing needs all its parts in order to function. If some parts are missing, a doing is disassembled.