Inclusion Criteria:  CNCP on more than half the days in the previous 6 months use of opioids for more than half the days in the previous 90 days daily morphine equivalent dose equal to or greater than 50 mg age 18 years or older cognitive ability to understand questionnaires and participate in English only education sessions minimum average numerical pain rating of 3/10  Exclusion Criteria:  Currently receiving ACT or CBT previous experience with ACT within the past 12 months significant uncontrolled depression with or without suicidal ideation current psychosis known or suspected opioid misuse/abuse based on a score of seven or greater on the Opioid Risk Tool known or suspected opioid diversion based on previous clinician report and/or results of urine drug screen