Book excerpt: Why social work and motivational interviewing? -- The heart of motivational interviewing -- Motivational interviewing and the engagement and assessment process / with Hilda Loughram and Sally Mathiesen -- Supporting self-efficacy, or what if they don't think they can do it? / with Stephanie Wahab and Katie Slack -- Expressing empathy : communicating understanding (even when it's hard) -- Developing discrepancy : using motivational interviewing in a group setting to increase ambivalence -- Rolling with resistance : motivational interviewing with adolescents or "you can't make me" / with Elizabeth Barnett and Audrey. M. Shillington -- Building collaboration : motivational interviewing in community organization work / with Mike Eichler -- Integrating motivational interviewing into social work practice / with Rhoda Emlyn-Jones, Bill James and Cristine Urquhart -- Final thoughts : lessons learned from training and teaching motivational interviewing.