Deceive Self

You select a memory of events or fact that is known. You attempt to change the target memory or fact is changed to a new memory of events or understanding of the fact.  You must make a WIS saving throw. On a successful throw the spell is successful; for all intents and purposes the fabricated memory is true in your mind. Any attempt to retrieve the information or memory, magical or otherwise, will result in the fabrication being retrieved. This cannot be dispelled.

On a successful cast, memory of using the spell will also be lost.