Shan Rees and Roderick Graham show how assertion techniques can be used to enhance your daily life and to improve effectiveness both personally and professionally. A wealth of examples and exercises helps you to assess and improve your own assertion skills - how to get in touch with what you want, how to value your own opinions, how to deal with rejection and criticism, and how to build self-esteem and confidence.
My feeling is this is a predecessor to CBT but non the less a very informative and helpful book. I can imagine it's not for everyone but certainly the sections on anger, specifically traits of anger you may not realise are very informative. Helpful exercises to go through, not all relevant to everyone but covers all areas that I think most would be able to take something away from this book even with its age.