Dr. Levin discusses the importance of refining one’s character by learning from others, choosing a positive environment, and focusing on self-sacrifice, humility, and kindness. He emphasizes that character traits are a mix of inherited and modifiable aspects, encouraging ongoing self-improvement. Drawing on the teachings of the Lubavitcher Rebbe, Dr. Levin suggests that surrounding oneself with people of good character can inspire personal growth. He introduces a series on nature and nurture, exploring how both elements shape who we become.