Above all, don't lie to yourself. The man who lies to himself and listens to his own lie comes to a

Above all, don't lie to yourself. The man who lies to himself and listens to his own lie comes to a point that he cannot distinguish the truth within him, or around him, and so loses all respect for himself and for others. And having no respect he ceases to love.
----Fyodor Dostoyevsky, The Brothers Karamazov