Mistakes Were Made (But Not by Me) by Carol Tavris, Elliot Aronson (2008, Paperback, Reprint)

If you can engage in introspection then you may derive a benfit from this book, if you seek a "how-to" book then this is going to more work for you. The numerous examples given in the book clearly define the points being made. When looking into your own actions you will see the simularities clearly and you may even hear their justifications beiong applied in your daily interactions, better still, you may catch yourself using trying to rationalize yourself out of a bad-decision.