self-congratulation
noun🔊/ˌself kənˌɡrætʃəˈleɪʃn/
🔊/ˌself kənˌɡrætʃəˈleɪʃn/
[uncountable] (usually disapproving)a way of behaving that shows that you think you have done something very well and are pleased with yourself 沾沾自喜；自鸣得意