"You will always find something destroying your happiness. You will always find something missing, something absent. And that missing will become your daydream again.
And you cannot achieve a state where everything, everything is available. Even if it is possible, then too you will not be happy. Just look at the mechanism of the mind: if everything is available as you want it, suddenly you will feel bored.
Mind will never allow you to be happy. Whatsoever the condition, the mind will always find something to be unhappy about."
(Source: MOVING IN TO UNKNOWN(DISCIPLINE OF TRANSCENDENCE-II)