RecruitingBehavioural interventionEmpowered Relief® for Cancer Survivors With Chronic PainThis randomized controlled study to examine the efficacy of ER class in cancer survivors with chronic pain. Eligible participants will be randomly assigned to a ER class or a waitlist control condition. We will recruit 250 participants with a goal of having 200 completers (20% attrition). Participants in the control condition will be invited to attend ER class after the 3-month observation period.