We're born alone, we die alone, and we live alone, each on our own planet of perception. No two people have ever met. Even the people you know best and love with all your heart are your own projections. Sooner or later, you're the one who's left. Do you realize how wonderful that is? After all, you're the one you go to sleep with and wake up with, you're the one who orders your favorite food and loves your favorite music. You've always been your favorite subject — your only subject. It's all about you.
— Byron Katie, A Thousand Names for Joy