Psychologist Brett Steenbarger, PhD, talks about the role of the four areas of well-being -- happiness or joy, fulfillment, energy and relationships -- in his discussion of solution-focused therapies for the mentally well. Solution-focused therapy emphasizes an individual's strengths. Steenbarger is a performance coach for portfolio managers and traders at financial organizations, and he's also a teaching professor in the department of psychiatry and behavioral sciences at Upstate. Click here for some of his Forbes magazine columns about psychology and performance; click here for his blog for professional traders.