Relapse prevention after pain management is a neglected area and Internet-based interventions have the potential to partly fill this gap. A challenge in designing effective relapse prevention program is how to motivate patients to persist throughout the full length of treatment. Following a regular pain management program, 29 participants underwent a 20 week long Internet–based relapse prevention program based on acceptance-oriented CBT. Qualitative analyses showed changes in attitudes towards their pain and body during the course of treatment. Degree of personal commitment in treatment goals seemed to affect gains relating to new perspective on self and future. Therapeutic strategies of defusion and mindfulness seemed to ease perspective changes and persistence to comply. Values interventions are hypothesized to be a plausible therapeutic strategy to engage participants in continuous behavior change. Further studies on non-compliers and drop-outs could enhance understanding of interventions necessary to maintaining motivation. When and how to give therapist support during Internet-based treatment for chronic pain is another area in need of further studies.