"If there is nothing you can do, face what is and say, 'Well, right now, this is how it is. I can either accept it, or make myself miserable." The primary cause of unhappiness is never the situation but your thoughts about it. Be aware of the thoughts you are thinking. Separate them from the situation, which is always neutral, which always is as it is. There is the situation or the fact, and here are my thoughts about it.

Eckhart Tolle

from A New Earth: Awakening to Your Life's Purpose