The greatest competitive advantage in our modern economy is a positive and engaged brain.

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.

So many people are struggling to create happiness while their brain is inundated by noise. If your brain is receiving too much information, it automatically thinks you're under threat and scans the world for the negative first. Because the brain is limited, whatever you attend to first becomes your reality.

Scientifically, happiness is a choice. It is a choice about where your single processor brain will devote its finite resources as you process the world.

Happiness is the precursor to success.

The fastest way to disengage an employee is to tell him his work is meaningful only because of the paycheck.

Spend two minutes a day scanning the world for three new things you're grateful for. And do that for 21 days, The reason why that's powerful is you're training your brain to scan the world in a new pattern, you're scanning for positives, instead of scanning for threats. It's the fastest way of teaching optimism.