Adults who suffer from Attention Deficit-Hyperactivity Disorder know that it can have harmful effects in their workplace, in their self-esteem, and in the way they interact with their family and friends. While some medications have been effective in treating adults ADHD, the majority of individuals treated with medications have residual symptoms that require additional skills and symptom management strategies. Used in conjunction with the treatment described in the corresponding Therapist Guide, this Workbook provides effective and practical skills that have been scientifically tested and shown to help adults cope with their ADHD symptoms. The treatment plan contains step-by-step, session-by-session information and materials necessary to participate in this treatment in the context of individual outpatient cognitive behavioural therapy. Clients can be active participants in this therapy by helping to personalize their treatment strategy and monitoring their progress, all toward the goal of learning to overcome their ADHD.