Beliefs are so powerful because they dictate our efforts and actions.

You can eliminate depression without making someone happy. You can cure anxiety without teaching someone optimism. You can return someone to work without improving their job performance. If all you strive for is diminishing the bad, you'll only attain the average and you'll miss out entirely on the opportunity to exceed the average.

I've worked with farmers in Zimbabwe who've lost their lands. I've worked with people in Venezuela, under threat of kidnappings, whose external world is unstable. But they have very strong social connections with their family and friends. And as a result, they're able to maintain a greater level of happiness and optimism than I've seen from bankers, consultants, or salespeople who are on the road all the time, who follow jobs separated from their families, and, as a result, find themselves missing out on the happiness that comes from those very connections that they severed.

[It's] the lens through which your brain views the world that shapes your reality. And if we can change the lens, not only can we change your happiness, we can change every single educational and business outcome at the same time.

Happiness is actually an individual choice, even in the midst of negative circumstances. It's not something our employers can give to us, though they can limit and influence that choice.

We not only need to work happy, we need to work at being happy.

Positivity is such a high predicator of success rates.