Growing up, I was prone to anxiety.

We can boost our immune systems by strengthening our social networks and decreasing stress.

The single biggest misconception about games is that they're an escapist waste of time.

A game is an opportunity to focus our energy, with relentless optimism, at something we’re good at (or getting better at) and enjoy. In other words, gameplay is the direct emotional opposite of depression.

Things like depression and obesity are global challenges.

Game developers know that people have more fun when they're in large groups. They feel more fired up when the challenges are more epic.

Urgent optimism is the desire to act immediately to tackle an obstacle, combined with the belief that we have a reasonable hope of success.