"90 percent of your long-term happiness is predicted not by the external world, but by the way your brain processes the world. And if we change it, if we change our formula for happiness and success, what we can do is change the way that we can then affect reality.
Only 25 percent of job successes are predicted by I.Q. 75 percent of job successes are predicted by your optimism levels, your social support and your ability to see stress as a challenge instead of as a threat....
If you can raise somebody's level of positivity in the present, then their brain experiences what we now call a happiness advantage, which is your brain at positive performs significantly better than it does at negative, neutral or stressed.
Your brain at positive is 31 percent more productive than your brain at negative, neutral or stressed. You're 37 percent better at sales. Doctors are 19 percent faster, more accurate at coming up with the correct diagnosis when positive instead of negative, neutral or stressed. Which means we can reverse the formula. If we can find a way of becoming positive in the present, then our brains work even more successfully as we're able to work harder, faster and more intelligently.