i enrolled myself into a subject in university without really knowing what it was. turned out to be positive psychology. that subject changed my life in so many ways, and i ended up going down the rabbit hole of it but also psychology. 
i really love the concept behind positive psychology - the fact that it’s based upon giving people tools to conquer the everyday life, and to handle bad days or even depression and anxiety is powerful 

 in other words, you give people the tools before they need it.