We ask for happiness but what we get is unhappiness. We all put our efforts into trying to be happy but we make a fundamental mistake: happiness is not related to the effort, happiness is related to not asking for it.
To produce things and to rear them,
To produce, but not to take possession of them,
To act, but not to rely on one's own ability,
To lead them, but not to master them -
This is called profound and secret virtue.