"You can figure out by sheer logic that if you were only--and I mean only--to stay with your desires and preferences, and if you were never--and I mean never--to stray into unrealistic demands that your desires have to be fulfilled, you could very rarely disturb, really disturb, yourself about anything. Why? Because your preferences start off with, "I would very much like or prefer to have success, approval, or comfort," and then end with the conclusion, "But I don't have to have it. I won't die without it. And I could be happy (though not as happy) without it."