The opening chapter explores the concept of peak performance, defined as a state in which individuals achieve their highest level of functioning. It emphasises that peak performance is relative to one’s skills and goals rather than a universal standard. We introduce theories, including Maslow’s hierarchy of needs, Csikszentmihalyi’s concept of flow, Ericsson’s deliberate practice, and Hanin’s individual zone of optimal functioning, highlighting how psychological and physiological factors contribute to peak performance. The chapter also addresses the interplay between mental health conditions and high achievement, focusing on anxiety disorder, obsessive-compulsive disorder, attention-deficit/hyperactivity disorder, autism spectrum disorder, and narcissistic personality disorder. Although these conditions can pose challenges, like stress, burnout, and emotional dysregulation, they also come with unique strengths, such as enhanced creativity, heightened focus, and strong perseverance. The chapter advocates for a neurodiversity-affirming approach, emphasising strengths rather than deficits. Practical wellbeing strategies include stress management, emotional regulation, and balancing effort with recovery. High achievers often face challenges such as imposter syndrome and burnout. However, building emotional awareness and applying targeted coping strategies can reduce these risks. We also underscore the importance of individual-centred approaches in fostering resilience and maintaining peak performance, especially for neurodivergent individuals.