The method itself is simple; invite a thought to arise in your mind often enough, and it will become a mental habit. For example, if every time you see another person, you wish for that person to be happy, then eventually, it will become your mental habit and whenever you meet another person, your instinctive first thought is to wish for that person to be happy. After a while, you develop an instinct for kindness. You become a kind person. Your kindness shows in your face, posture, and attitude every time you meet somebody.
I like this and was the one thing I still remember from his Fresh Air interview. This is stuff that can change the world. Easily.
