Self-deception–what is it? It seems to be rather like lying to oneself, but how does one do that? You can lie to others, but it beggars the comprehension to fathom how one could pull off the trick of lying to oneself.
This may be why we say that self-deception is like lying to oneself. Deceiving oneself is not actually lying to oneself. But if it is true that self-deception is analogous to lying, then in what respect? In the respect, I think, that somebody is deliberately misled.
But can I deliberately mislead myself? The possibility is worth considering.