Religion. This is one of the principal functions of religion. Religion should be a way of putting the world in perspective, viewing one's within a broader context, reminding one of the peaks when seemingly trapped in the pits.
My wife's therapist reminded her of three of the watchwords of our religion just yesterday. A saying of Rabbi Hillel: "If I am not for myself, then who will be for me? And if I am only for myself, what am I? And if not now, when?" "We are not required to finish the work, neither are we free to desist from it." Before his death, Rabbi Zusya said "In the coming world, they will not ask me: 'Why were you not Moses?' They will ask me: 'Why were you not Zusya?'"
Words like those pull me back to life at those times when I am so low, I am tempted to simply exist.
Speaking only for myself,
S