Meditation

... there are two reasons why you must be content with what happens to you: first because it was for you it came to pass, for you it was ordered and to you it was related, a thread of destiny stretching back to the most ancient causes; secondly because that which has come to each individually is a cause of the welfare and the completion and in very truth of the actual continuance of that which governs the Whole.

-- Marcus Aurelius, Meditations: V, 8