What is the term for people that lie constantly even when the truth sounds better and then even believing their own lies to the point where they accuse everyone else of being crazy?

Naricissism is your answer.

AnswerSociopath is another.

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A Delusional Liar..

Romans 3:7 For if the truth of God hath more abounded through my lie unto his glory; why yet am I also judged as a sinner?

AnswerCompulsive liar. Answer

Pathological Liar