The current global happiness industry has some of its roots in Christian morality codes, many of which will tell us that there is a moral reason for any unhappiness we may experience. This, they will often say, is due to our own moral shortcomings, selfishness, and materialism. They preach a state of virtuous psychological balance through renunciation, detachment, and holding back desire.
In fact, these strategies merely try to find a remedy for our innate inability to enjoy life consistently, so we should take comfort in the knowledge that unhappiness is not really our fault. It is the fault of our natural design. It is in our blueprint.