[wetKoala]

Delusional. Being delusional.

A person is simply delusional, if they are deceiving themselves.

May as well start gangstalking myself. Hold on, let me stand outside my window with all my other selves. brb

[perl4ever]

There are lots of ways to express similar concepts in English, but in this case, I think "gaslighting yourself" expresses an incremental, progressive, or recursive concept whereas "simply delusional" is more static.