Instruct: Classify Amazon reviews into positive or negative sentiment
Query: There are better books on same subject

I think the other 1-star reviewer pretty much nailed it. This is just story after story of women treating each other really badly, without much in the way of helpful solutions. The answer to the question in the title is, "You'll never know what you did wrong, because most women are too spineless to tell you. Or you may have done nothing wrong, but many women are just plain fickle." In many cases the book just seems like too much overanalyzing and bellyaching and "Why? Why? Why?" I found myself saying, as I read it, "Get over it and move on already!" Marla Paul's book, "The Friendship Crisis," was much better in terms of offering useful insights and positive solutions -- not just reminders of how awful women can be to each other.