You must build up your strength and focus on better self-control.

Focus on better self-control: This part emphasizes the importance of developing stronger willpower and discipline over one's actions, emotions, and impulses. It suggests being more mindful of one's behavior and making conscious efforts to resist temptations or act in a more controlled manner.

Together, this phrase encourages the individual to invest effort in both physical and mental aspects of self-improvement. By building physical strength and fostering better self-control, they can become a more resilient and balanced individual capable of facing challenges and maintaining a disciplined approach to life.