Happiness is not something you have in your hands; it's something you carry in your heart. Happiness is one thing that multiplies by division. Happiness is that peculiar sensation you acquire when you are too busy to be miserable. Happiness is that state of consciousness which proceeds from the achievement of one's values.
Ayn RandThere must be only three supreme values which govern a person's life: Reason, Purpose, and Self-esteem. Reason, as his only tool of knowledge--Purpose, as his choice of the happiness which that tool must proceed to achieve--Self-esteem, as his inviolate certainty that his mind is competent to think and his person is worthy of happiness, which means: is worthy of living. These three values imply and require all of man's virtues, and all his virtues pertain to the relation of existence and consciousness: rationality, independence, integrity, honesty, justice, productiveness, pride.
Ayn Rand