I lie as well..
Sometimes I think it's easier for me to accept the lie than to accept the truth, so I assume it will be easier for whoever I'm lying to as well... I find myself lying to myself all the time, and believing it so much that when I think I'm lying to other people, I am actually telling the truth... It's strange to think about, but that way if the person seems disappointed in the truth, I say "oh, I didn't mean that" and say the actual lie...
I don't know if that made any sense