Happiness depends upon ourselves.
When one door of happiness closes, another opens, but often we look so long at the closed door that we do not see the one that has been opened for us.
When a girl tells you about her problems, it does not mean that she's complaining, it means she trusts you.
This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.