Understanding the complex aetiology of mental health is a crucial, and pressing area of research, with the ultimate aim of helping individuals to remain mentally healthy across the life-course. Using methods from epidemiology, psychology, behavioural genetics, statistical genetics and epigenetics, my research will explore why some individuals are more resilient than others when presented with life’s stresses and strains, and the role that genetic and environmental factors play in promoting resilience and wellbeing.