I recently came across a new book about birding which I quickly bought and read through over just a few days. Joe Harkness, a teacher who lives in England, struggled with mental health. This was until he took up birding more seriously. His book, simply called Bird Therapy, describes his journey from illness, including depression, to better health.
If you want to read more about this project, I encourage you to check out the Bird Therapy Blog written by the author, Joe Harkness.