self-deceived

[ self-di-seevd, self- ]

adjective

holding an erroneous opinion of oneself, one's own effort, or the like.
being mistaken, forming an erroneous judgment, etc., in one's own mind, as from careless or wishful thinking: If you thought my friendship was love, you were self-deceived.

Origin of self-deceived

First recorded in 1665–75

Let the brickwork of ignorance be thrown down, and let not spiritual sunshine be shut out from the self-deceived heart.
The Haunted Room | A. L. O. E.
Although self-deceived as to the true nature of his discoveries, he yet well deserved all the honors that have crowned his memory.
The Story of American History | Albert F. Blaisdell
But greater than her interest in this new personality was her anger at having been deceived—self-deceived.
The Fashionable Adventures of Joshua Craig | David Graham Phillips
But, be not self-deceived; that is the first rule in knocking about over the world.
The Wonders of Pompeii | Marc Monnier
Or was he only a subconscious Pharisee, self-deceived and complacent?
The Quickening | Francis Lynde

Browse