Happiness is a butterfly, which when pursued, is always just beyond your grasp, but which, if you will sit down quietly, may alight upon you. Everyone is like a butterfly, they start out ugly and awkward and then morph into beautiful graceful butterflies that everyone loves.

Nathaniel Hawthorne

The caterpillar does all the work but the butterfly gets all the publicity.

Attributed to George Carlin

I, not events, have the power to make me happy or unhappy today. I can choose which it shall be. Yesterday is dead, tomorrow hasn’t arrived yet. I have just one day, today, and I’m going to be happy in it.

Groucho Marx