willpower
/ˈwɪlwəpɔːr/Definitions
1. noun
the ability to control your thoughts and feelings, and to make decisions even when it is difficult
“She relied on her willpower to stick to her diet and exercise routine.”
2. noun
the power to make decisions or to take action, especially when it is difficult or unpleasant
“His willpower was tested when he had to quit smoking.”
3. noun
a person’s mental strength or determination
“She has a lot of willpower, which helps her to achieve her goals.”