self-improvement

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˌself-imˈprovement noun [uncountable]  the process of trying to become a better and happier person, for example by gaining new knowledge 自我提高，自我完善

ˌself-imˈprovement nounChineseSyllable  

self-improvement
ˌself-imˈprovement noun [uncountable]
the process of trying to become a better and happier person, for example by gaining new knowledge

self-improve·mentBrE /ˌself ɪmˈpruːvmənt/ 🔊NAmE /ˌself ɪmˈpruːvmənt/ 🔊 noun [uncountable] the process by which a person improves their knowledge, status, character, etc. by their own efforts （在知识、地位、性格等方面的）自我改进，自我提高