The fact that I can plant a seed and it becomes a flower, share a bit of knowledge and it becomes another's, smile at someone and receive a smile in return, are to me continual spiritual exercises.
Ancient Egyptians believed that upon death they would be asked two questions and their answers would determine whether they could continue their journey in the afterlife. The first question was, 'Did you bring joy?' The second was, 'Did you find joy?
Happiness is intrinsic, it's an internal thing. When you build it into yourself, no external circumstances can take it away.
What we call the secret of happiness is no more a secret than our willingness to choose life.