Mental strength refers to a person's ability to cope with stress, adversity and challenges in life. It involves having a positive mindset, resilience, self-discipline, determination, and perseverance. People who possess mental strength are able to manage their emotions effectively, set realistic goals for themselves, and work towards achieving them despite obstacles or failures. Mental strength also includes the ability to focus on solutions rather than dwelling on problems, having a strong sense of self-worth, and being able to ask for help when needed. Overall, mental strength is an essential quality that helps individuals navigate through life's challenges with grace and resilience.