I feel like the fact that people lie to themselves about things can tell you a lot about that person but I just can't put my finger on a single word that I'd use to describe them. In fact, not just describe them, but truly convey that they lie to themselves.
Example of a person who lies to themself: "I will do all my work
tomorrow, I swear."
Best Answer
Self-deluding.
A delusion is a belief or idea that is not true. To delude yourself is to convince yourself to believe an idea that is not true.