I think self-discipline is something, it's like a muscle. The more you exercise it, the stronger it gets.

- Daniel Goldstein

Psychology, unlike chemistry, unlike algebra, unlike literature, is an owner's manual for your own mind. It's a guide to life. What could be more imp…

- Daniel Goldstein

If you set goals for yourself, and you're like a lot of other people, you probably realize it's not that your goals are physically impossible that's …

- Daniel Goldstein