I’m obviously a big proponent of positive thinking as the best way to achieve your goals, but it turns out that it can lead to happiness too. Optimism and self-esteem are some of the best indicators of people who lead happy lives. Happy people feel empowered, in control of their lives, and have a positive outlook on life. Action steps: Make positive thinking a habit. In fact, this should be one of the first habits you develop. Get into the habit of squashing all negative thoughts and replacing them with positive ones. Instead of “I can’t” think “I can”. It may sound corny, but it has worked for me, every time.
/ Zen Habits