The gayety of life, like the beauty and the moral worth of life, is a saving grace, which to ignore is folly, and to destroy is crime. There is no more than we need; there is barely enough to go round.
If there ever was a pursuit which stultified itself by its very conditions, it is the pursuit of pleasure as the all-sufficing end of life. Happiness cannot come to any man capable of enjoying true happiness unless it comes as the sequel to duty well and honestly done. To do that duty you need to have more than one trait. From the greatest to the smallest, happiness and usefulness are largely found in the same soul, and the joy of life is won in its deepest and truest sense only by those who have not shirked life's burdens.
The joy of all mysteries is the certainty which comes from their contemplation, that there are many doors yet for the soul to open on her upward and inward way.
Instead of answering your question directly I shall quote from the Indian poet Tagore: “I slept and dreamt that life was joy/ I awoke and saw that life was service/I acted and behold, service was joy.” In fact, through my work I discover life, people, and everything which happens around us.