Daphne Du Maurier said this quote
“ ...are you happy?I am content.What is the difference?Between happiness and contentment? Ah, there you have me. It is not easy to put into words. Contentment is a state of mind and body when the two work in harmony, and there is no friction. The mind is at peace, and the body also. The two are sufficient to themselves. Happiness is elusive--coming perhaps once in a life-time--and approaching ecstasy.Not a continuous thing, like contentment?No, not a continuous thing. But there are, after all, degrees of happiness. ”