The way that positive thinking is used by some people to spare themselves from having to listen to you, help you or really try to understand the reality of illness when you are seriously ill is something that comes up a lot in the chat groups for ill people I am a member of. On the surface they are being kind and offering you 'positive thoughts' but it is really about this serving their needs rather than yours.
Expressing legitimate anger is helpful and necessary. If you do this it passes quickly! Far better to vent for a little while to friends who understand than to repress all your feelings and so end up feeling unhappy far longer, in the end.
The chapter on positive thinking and illness was good but really only scratched the surface. I was somewhat disappointed by it as there was so much that could have been said on this topic and I'd have loved lots more comments on this topic to have been in the book. But then I am biased and this is a special interest subject of mine and probably this short chapter was more than enough for the average reader, so fair enough.
The way the author ties in positive thinking brainwashing to political apathy in the last chapter was very well done too and I couldn't agree more with her conclusions. As someone involved in trying to fire people up to participate in activism I absolutely find the 'nicey nicey at all costs' mindlessly positive attitude to be an enormous obstacle in effecting real positive change. Just enormous.
I highly recommend at least searching your local library for a copy of this book, it deserves to be widely read.