Michael Neenan and Windy Dryden are experienced teachers of Rational Emotive Behaviour Therapy (REBT). Over the years, they have noticed a large number of common errors which students regularly make: in fact, they can reliably predict what most of these errors will be. Initially, Neenan and Dryden aimed for 50 or 60 errors, thinking that this would be the limit, but in fact they reached 101. They assembled the errors in to seven categories: general, assessment, goal--setting, disputing, homework, working through, and self--maintenance. In dealing with each error, they explain what has gone wrong and how to put it right. The excerpts of dialogue are not verbatim accounts of therapy or supervision but illustrative examples of the points the authors are making. Students reading this book should be able to pinpoint these errors at an earlier stage in their training thereby enabling them to make faster progress towards becoming competent REBT therapists.