What a good book!
It's short enough to read cover to cover and I found that unlike most books of it's type I didn't get bored doing so.
The advice for how to deal with situations is presented in a very accessible way. The explanations are straightforward and accompanied by relevant examples. The book guides the reader through various 'difficult' scenarios (e.g. starting up conversations, keeping them going, dealing with criticism, avoiding being manipulated etc.) in a way which seems designed to gradually build confidence.
If you want to improve your self confidence and/or your relationships at home or at work I think that you will find ideas in this book to help.