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

If you can manage to experience three positive emotions for every one negative emotion … you dramatically improve your health and your ability to successfully tackle any problem you're facing.

Research shows that when we're under stress or facing a major obstacle, we tend to focus on our weaknesses and what we're afraid of.

It's a bit counter-intuitive to think about the future in terms of the past. But...I've learned an important trick: to develop foresight, you need to practice hindsight. Technologies, cultures, and climates may change, but our basic human needs and desires - to survive, to care for our families, and to lead happy, purposeful lives - remain the same.' p 5

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.

I don't want to be a saint; I just want to help people.

You can't play the same game every day for years. New games are key.