What makes one person happier than the next? It's not money. It's not the circumstances into which they are born. It's not even what happens to them in this uncertain world. Positive Psychology, often referred to as "the science of happiness," generally suggests that happiness is largely dependent on learnable habits.
Our brain changes with experience, and we get good at what we practice. The neural networks that you exercise become stronger, and eventually the thought patterns and mental habits that are being represented by those neural networks get stronger and become effortless and automatic.
The most powerful way to change your brain is not actually medication, it’s behavior, because that’s what it’s designed to change in relation to — not just any behavior, specifically mental behavior or mental habit. William James called habit “the basic structure of mental life.
This Happiness Map is my own elucidation of some of the habits and principles espoused by Positive Psychology.