If life were only that easy. Ha ha. Life is made of peaks and valleys for most. Learning to live without needing outside validation/ego needs or any attachments is what many middle and eastern religions/philosophies are based on. (see buddhism et al). Being happy without needing a reason will be the absolute best of life's approaches. Otherwise, most if not all emotional states, wave in and out. The human seems to survive hunting "more" and the hunt, does not always produce what the ego wants as an outcome.
Oh, and don't look at me for knowing how to live in a constant happy state. I am as addicted to lifting and my insecurities and ego attachments as most people . At times lifting really delivers and other times, I seem to hit a huge wall.