"Strong willpower" means having a strong determination and control over one's actions, thoughts, and desires. It is the ability to stay focused, resist temptation, and persist in achieving goals. Full definition
Sure they do better than the average child «resisting» but they are not little adults with strong willpower or the ability to make decisions based on long - term consequences («I'm going to say no because this could make me overweight or lead to Type 2 Diabetes»). (thelunchtray.com)
Kicking an addiction requires nothing more than sheer willpower (albeit strong willpower) and time. (religion.blogs.cnn.com)
So, you have much stronger willpower than I!! (orangette.net)