I'm a trainnee counsellor and bought this book due to it being mentioned in my course regularly as being a famous critique of therapy. What I really liked about it was that it opened my eyes more in the sense of cases he cites of the mental health field being abusive to its' clients. It also provided some shocking evidence that Carl Jung couldve been a Nazi sympathiser, although other evidence does seem to make this more inconclusive. It also picks some interesting holes in theories and how they may not be useful or indeed very damaging. As the title suggests, the book is against therapy.
What I can't take on board though and what I know from reading around therapy that generally isn't taken on board from Massan's work is that the solution is to totally abolish therapy and make some warm friendship groups as a possible solution. This conclusion is quite insulting to people who have genuine issues which cannot be accommodated merely by talking to friends. Professionals are clearly needed and what myself and my colleagues call for is for the counselling field to be more regulated. It is at points but at other times isn't which could allow for potential abuse.
There are several counselling charities around, not to mention my current working for the NHS which are highly regulated and supervised to constantly do what is best for the client.(although Massan would argue we're not actually doing best for the client). Also some of his claims such as in UK on counselling course you don't have to have your own personal therapy simply are not true. Most courses actually require counsellors to have their own therapy for about 50 hours. Not only that but within the course there are groups which you are expected to make a good contribution to pass.
Also, what I feel is very important to say is whereas the abusive cases he sites are no doubt really important and make me say how it should be regulated. I would like to say that they are so so far removed from either my experience or anyone I've known. Most people I know who have had counselling (and I know a lot) see it as a very rewarding experience and not only that but very difficult to go through and commendable to go through and as result of which can have relationships and live a life which before wouldnt of been possible. Some people including myself see having counselling and the best thing theyve ever done for themselves.
Counselling charities which I worked for provides an invaluable service to people in need of someone to speak to. This has very professional training and supervised counselling. So I would say it is well worth a look but read a lot around it. It contains some useful interesting insights for sure and obviously the abuse is so important but as stated earlier very few people agree with what his conclusion is.