Quote from Frasier in Don Juan in Hell (Part 2)
Diane: Don't feel too bad. You'll always have us. Isn't that right, girls? Frasier: All right, wait a minute. That's it! That's my problem. You are always there. I have carried you with me throughout every relationship, on every date. You pick apart every woman I care about and you remind me how much it'll hurt if I open myself up. You don't help me. You hold me back. How will I ever move forward if I don't put you behind me...? [Frasier turns around and finds the women are all gone. He is alone at last.]