I think what's interesting is that over the last 10 or 12 years, attitudes to mental illness are changing. When Stan was suffering with depression, John Gregory's attitude was pretty much 'buck your ideas up son,' and real stress is a single mother with 4 kids to feed. I think numerous people agreed with Gregory's summary and thought Stan should get on with it.
Looking at things now, this is a very outdated, narrow minded ignorant view. This is indisputably a horrible, debilitating illness which can affect young and old, rich and poor. How a married family man who is wealthy, successful in his career and outwardly normal can suffer such inner despair is baffling to many, but the illness by its very nature is much more complex.
*Assuming this is the case.