The most prominent National Hockey League player to openly share his personal battle with mental health and a public diagnosis of bipolar disorder is veteran goaltender Robin Lehner. After enduring severe personal struggles, addiction, and mental health crises during his early professional career, Lehner courageously opened up about being diagnosed with Bipolar 1 disorder with manic phases, alongside attention deficit hyperactivity disorder and post-traumatic stress disorder. By speaking candidly about his journey through treatment, rehabilitation, and finding stability, Lehner transformed into a vital mental health advocate across professional sports, breaking traditional athletic stigmas and encouraging athletes across all leagues to prioritize psychological well-being and seek professional support when confronting invisible internal battles.