To be a devotee means to know within all levels of your being that there is nothing but God, nothing but love, and this produces a kind of happiness that is profound and way beyond temporary disappointments, and which does not depend on satisfying the ego, because if you still have one, you hardly remember to think about it, much less please it. I find this kind of happiness in Devi, and when not actively doing some daily task or job, I am thinking hymns and mantras and finding Her everywhere.