The pursuit of happiness is a matter of demand from outside the body called “passion” When the demand can not be owned. Distress have suffering physical, mental distress such as the passion that causes distress and the lack of a good fortune.
Suffering physical means suffers a physical cause such suffering caused by the cold, heat, hunger, thirst, illness and injury.
mental distress refers to the suffering caused by the embellishments of the mind.This part is suffering mental distress to physical stimuli, such as an injury or illness caused by physical suffering already.
Suffering from greed by metaphysics and greed will not contain their grief. Because greed is formed with joy.
How to fix unhappiness is precept, concentration, intellect. It was a real pleasure.