The Book of Psalms tells us to "serve God with joy," but how can we do this, particularly in hard times? In Judaism, joy is not meant to be a fleeting thing, dependent on the vicissitudes of life, but a constant attitude born of the assurance that God is taking care of us. Drawing a fine distinction between triumph and triumphalism, Rabbi Wein explains how keeping our egos in check keeps us happy when we succeed and when we fail.