Psychiatrist Raj Persaud talks about the secret of happiness:

Or as Lin Yutang wrote in The Importance of Living:

All questions of living in heaven must be brushed aside. Let not the spirit take wings and soar to the abode of the gods and forget the earth. Are we not mortals, condemned to die? The span of life vouchsafed us, threescore and ten, is short enough, if the spirit gets too haughty and wants to live forever, but on the other hand, it is also long enough, if the spirit is a little humble. One can learn such a lot and enjoy such a lot in seventy years, and three generations is a long time to see human follies and acquire human wisdom. Anyone who is wise and has lived long enough to witness the changes of fashion and morals and politics through the rise and fall of three generations should be perfectly satisfied to rise from his seat and go away saying, “It was a good show” when the curtain falls.

For we are of the earth, earth-born and earth-bound. There is nothing to be unhappy about the fact that we are, as it were, delivered upon this beautiful earth as its transient guests. Even if it were a dark dungeon, we still would have to make the best of it; it would be ungrateful of us not to do so when we have, instead of a dungeon, such a beautiful earth to live on for a good part of a century.