Positivity doesn't just change the contents of your mind...It widens the span of possibilities that you see.

Flourishing goes beyond happiness, or satisfaction with life. True, people who flourish are happy. But that's not the half of it. Beyond feeling good, they're also doing good-adding value to the world.

I began studying human emotions more than twenty years ago. At that time, almost every scientist working in this area was studying one of the negative emotions, like fear, anger, anxiety, or depression. I wondered why no scientists cared to explain why we humans sometimes feel upbeat and pleasant. I liked the idea of charting new terrain. It's been a fun intellectual puzzle. There's so much to discover!

The benefits of positive emotions don't stop after a few minutes of good feelings subside. In fact, the biggest benefit that positive emotions provide is an enhanced ability to build skills and develop resources for use later in life.

The boundaries between you and not-you — what lies beyond your skin — relax and become more permeable. While infused with love you see fewer distinctions between you and others. Indeed, your ability to see others — really see them, wholeheartedly — springs open.

Positivity psychology is part and parcel of psychology. Being human includes both ups and downs, opportunities and challenges. Positive psychology devotes somewhat more attention to the ups and the opportunities, whereas traditional psychology - at least historically - has paid more attention to the downs.

My all-time favorite topic in positive psychology is the study of positive emotions. I'm fascinated by how pleasant experiences, which can be so subtle and fleeting, can add up over time to change who we become. I'm especially excited these days about investigating how positive emotions change the very ways that our cells form and function to keep us healthy.