Study of Positive Psychology and Effects on Well-being of Anaesthesiologists in Hong Kong

This clinical trial aims to evaluate whether positive psychology interventions via a hybrid approach will enhance well-being and resilience amongst anaesthesiologists in Hong Kong. The main questions it aims to answer are: * Is app-based positive psychology intervention effective in improving well-being of physicians? * Is app-based positive psychology intervention feasible amongst busy healthcare professionals? Participants will be randomized to one of the two groups: * Four-week web-based interventions * Control group Researchers will compare the intervention and control groups to see if the participants' benefit from the positive psychology intervention compared with not receiving it.