We present two methods of enhancing outcome and preventing treatment failure in psychotherapy. The first involves providing therapists with a decision tree and several assessment measures for clients who are not having a positive response to psychotherapy. The organization of the decision tree and the selection of measures were based on results from psychotherapy outcome studies. The second method involves providing clients with feedback on their progress throughout the course of treatment. Both methods of providing feedback enhanced treatment outcomes and representative studies are reviewed. Use of these methods is recommended for application in routine practice. © 2004 Wiley Periodicals, Inc. J Clin Psychol/In Session.