(noun) The feeling of not being happy
"Each morning when I open my eyes I say to myself: I, not events, have the power to make me happy or unhappy today."
"The most unhappy people in the world are those who face the days without knowing what to do with their time."
"People can't, unhappily, invent their mooring posts, their lovers and their friends, anymore than they can invent their parents."
"Believe, when you are most unhappy, that there is something for you to do in the world. So long as you can sweeten another's pain, life is not in vain."