Did you hear about positive psychology already? via /r/gratitude

Recently I just came across the topic of "positive psychology" and I find it very interesting. It especially says that focusing on gratitude and your own strengths can have a big impact on your wellbeing! I just brainstormed a bit about that and I can really see why this is a thing haha. For example when I remember myself in which situations I feel most comfortable and confident, then its almost everything where I can see myself good at like playing football/soccer or plan events with my friends.

Now I was wondering if someone else heard about positive psychology and share their thoughts on that? I would also be interested in best practices how to incorporate that in my day to day life. Much appreciated!