Dr. Fieve is the only author I've cited who doesn't struggle with mental illness him himself but he seems to have spent a good deal of his life studying bipolar disorders. 

Here's a mention of the book I just found on bipolar-lives.com which provides a taste of what Fieve's book contains (the quote is at http://bit.ly/18ko1L):

"Dr Fieve introduces a new label - Bipolar IIB - the 'B' is for 'beneficial'. This is his term for the form of manic depression in which the bipolar person uses their highs to benefit themselves, their family and society."