In conclusion, we have presented a novel approach to understanding and improving wellbeing, connecting psychological science with a social ecological approach that considers the individual in the context of community and the wider environment (Fig \ref{535015}). Our GENIAL framework bridges the gap between psychological science and population health health systems, and provides a solid foundation for future research on the wellbeing of the individual as well as the communities and environments within which individuals live. In doing so, we hope that this framework and updated theoretical review helps to move the science of wellbeing forward to a more ethical and moral science that considers the wellbeing of current as well as future generations, providing an evidence base for groundbreaking national polices such as the 'Well-being of Future Generations (Wales) Act' (2015), and alerting researchers to consider the implications and context of human wellbeing in relation to major societal challenges such as the climate crisis. Wellbeing researchers ignore this context at their peril, and it is time that funding bodies take a more supportive stance of the transdisciplinary science that is urgently needed to achieve this goal, let alone, better understand relationships and inter-dependencies between individual, community and environmental wellbeing. We look forward to a future - well-funded - scientific effort that embraces the science of behavioural change to improve the wellbeing of not just the individual, but also of communities,and the wider environment, bearing in mind the potential positive impacts that improved community and environmental wellbeing will also have at the individual level.

Acknowledgements

We would like to acknowledge the support of Swansea University and the National Health Service in recognising and promoting our work through various awards including the University Research and Innovation Award for Outstanding Impact on Health and wellbeing (2018) and the Swansea Bay University Health Board Chairman's VIP Award for Commitment to Research and Learning (2018). We also acknowledge the partial funding that we have received from our partner, Fieldbay, which has been used to co-fund a PhD studentship that was awarded to the first author of this manuscript (JM). Finally, we would like to express our heartfelt thanks for the support of our service users, with whom we have built and implemented our novel and innovative positive psychotherapy intervention that is based on the GENIAL theoretical framework. This intervention is now being supported by grant funding from Health and Care Research Wales through the Research for Public Patient Benefit Scheme.