A single smile is a cure for anything. It penetrates the human heart causing it to beat faster. A single smile means warmth, satisfaction, happiness, and most of all it means life. People smiling know and understand they have something worth living for.
I think we each have a personal sweet spot as well. It's the state of mind in which we experience the most joy and satisfaction in being ourselves. And from that place of pleasure and joy in being ourselves, energy arises to flow out into our day bringing with it the depth and resonance of our own beingness, bringing with it blessing.
We weren't put here by the universe to attempt a "good" life. It is not merely for the pursuit of satisfaction that we live with beating heart and yearning soul. We have never been destined to play it safe... for we were meant to burn.
There is no need to mention the great difference between the amount of satisfaction there is in just oneself being happy and the amount of satisfaction there is in an infinite number of people being happy.