Reflective processing is a joint social action that develops in interaction. Using conversation analysis and discursive psychology, this article focuses on self-reflective turns of talk in group counselling for adults at risk of type 2 diabetes. We show how reflective processing unfolds in patterns of interaction, wherein group members take an observing, evaluating or interpreting position towards their own actions and experiences. Self-reflective talk is neither exclusively dependent on counsellors’ actions nor limited to the niches the counselling programme structure offers. (...) Self-reflective talk is one method of generating joint reflective processing. Such talk makes a topic available for discussion by connecting details of counselling with individuals’ experiences and enabling sharing. Self-reflective talk thus serves as a way for group members to participate in constructing a lifestyle problem, to invite or provide sharing of experiences and to display their orientation to the institutional task at hand. (shrink)