Your brain is wired to continuously analyze your environment, your thoughts, and your health and to use that information to generate a sensation you call your attitude. You know from experience that you do better work, and you more enjoy life, when your attitude is good. If you could control your attitude directly, as opposed to letting the environment dictate how you feel on any given day, it would be like a minor superpower. It turns out you have that superpower. You can control your attitude by manipulating your thoughts, your body, and your environment.
