self-discipline
noun [ U ] approving uk/ˌselfˈdɪs.ə.plɪn/ us/ˌselfˈdɪs.ə.plɪn/
C2 自律；自我约束能力；自制力
the ability to make yourself do things you know you should do even when you do not want to
You need a lot of self-discipline when you're doing research work on your own. 你独立做研究工作的时候，需要高度的自我约束力。