Is there a secret formula to happiness? We all struggle sometimes, but what does it mean when we struggle? We all experience strong emotions, but what should we do about them? We all want to be happy - but what is happiness and why is it so elusive? Positive psycho-therapist Marie McLeod takes on a group of volunteers with mental health issues and offers them interventions grounded in positive psychology, neuroscience and wellbeing science. The film's premise is; if we offer the science of happiness to people experiencing struggle; what difference would it make? Is happiness a learnable skill and can we teach people skills to live happier, healthier and more meaningful lives? The world of psychology has for far too long studied what goes wrong with the human mind. Whilst these have led to important understandings about our deficits and disorders - there is another side of those sciences. The science of what is right about us and what thoughts, actions, and behaviours we can all learn that make life worth living. With unprecedented access; the result is an intimate, heartfelt and hopeful film that offers a rare glimpse into the lives of 7 people who make incredible transforms as a result of learning 'How to Thrive?'