Many people will try and reduce all our motivations to either avoiding pain and/or increasing pleasure. This strategy works great for most of the animal kingdom, but in humans, these two motivations aren't exactly opposites. "Pleasure" does not always, and in fact, almost never leads to "Happiness".

 Let me give you an example: let's say that you're dieting, or starting on an exercise program, or stopping smoking. When you give in to your temptations it yields an immediately pleasurable sensation, but is always followed with feelings of; guilt, remorse, failure, hopelessness, etc. So the momentary pleasure did not give you actual happiness. True happiness requires a commitment to forego pleasure and endure a certain amount of pain in order to make meaningful personal gains.

Shaolin-Do students forego the PLEASURE of:
-sitting passively in front of the T.V. every evening in search of entertainment.
-Partying late Friday nights (before Saturday morning classes)
-Skipping class on any whim.

Shaolin-Do students face the PAIN of:
-Constant physical challenge
-Humbling (often humiliating) acknowledgement of one's own limitations
-Caring about things like Loyalty, Honor, And Right Action, which consumer society seems to discourage.
-Having soreness in muscles you didn't even know you had.