Sam writes for a living and loves it. He writes every day—sometimes working on his blog, sometimes on a novel, but always putting something on paper. He learned about perseverance in his college success class, and now he sets aside four hours a day just for writing, regardless of what other activities he may have planned.

The capability to manage our emotions, feelings, and actions is profoundly called self-control. It is said to be an important attribute in everyone's life because it helps in regulating the behavior in order to reach our long-term targets or objectives.

Self-control is not only important for goal attainment. Self-control helps in performing better in school, having higher self-esteem, and better physical and mental health.

Here Sam dedicates four hours daily for writing as he loves and relies on it for his living. His perseverance, that he has learned from his college he continues to write for four hours despite other activities that he has planned.

It can be inferred that Sam has greater willpower and he is self-controlled.