Reverse any tendency you have to make comparisons. Quit talking about what you don't have compared to what you have; stop whining about how you are doing career-wise, relationship-wise, or any other-wise in comparison to how a friend or enemy is doing. The next time you start chattering about wanting something more, better, or different, don't listen.

Frederic & Mary Ann Brussat in Spiritual Rx: Prescriptions for Living a Meaningful Life