The act of deceiving oneself or holding false beliefs.

आत्म-धोखे का कार्य

English Usage: His self-delusion made it difficult for him to accept the reality of his situation.

Hindi Usage: उसका आत्म-धोखा उसकी स्थिति की वास्तविकता को स्वीकार करने में कठिनाई पैदा कर रहा था।