Positive Psychology Center
The mission of the Positive Psychology Center at the University of Pennsylvania is to promote research, training, education, and the dissemination of Positive Psychology, resilience and grit.
Positive Psychology is the scientific study of the strengths that enable individuals and communities to thrive. The field is founded on the belief that people want to lead meaningful and fulfilling lives, to cultivate what is best within themselves, and to enhance their experiences of love, work, and play.
This company offers training, but also provides links to a wealth of resources regarding mental health. In addition to research articles, there are videos, books, etc. regarding positivity.