Wellbeing is a broad concept encompassing factors such as life satisfaction, emotional health and happiness. Our study aims to provide us with a deeper understanding of child and adolescent developmental pathways to early adult wellbeing. Early adulthood can be stressful, with many major situational changes occurring during this time such as moving away from home, finding a job and starting a family. Good wellbeing can help to ensure a smooth transition from adolescence into adulthood and act as a buffer against life stressors during this time. We wish to investigate both the effects of the distal influences of childhood and the proximal influences of early adulthood in order to contribute evidence to build a lifecourse model of wellbeing. Our study will study a diverse set of wellbeing outcomes, expanding beyond the commonly measured life satisfaction to concepts such as basic psychological needs, meaning in life and gratitude.