My research responds to the urgent need for climate action by investigating relationships between individuals’ efficacy beliefs and diverse types of pro-environmental behaviour. While current efforts prioritize consumer behaviours, my research explores typically overlooked influence and citizenship behaviours, like talking about climate change and activism. Drawing on social psychological theories, I aim to provide a comprehensive understanding of the relationships between different types of efficacy and climate actions, considering sociodemographic and contextual influences. Using findings from focus groups and surveys, I will develop and test interventions that increase efficacy and foster more effective, fairer climate action amongst different sociodemographic groups.