Motivational Interviewing (MI), first described by William Miller (1983), and later elaborated in the classic book—Motivational Interviewing: Preparing People for Change (1991, 2002, 2014)—offers a practical, evidence-based approach for supporting clients in making and sustaining healthy behavior changes. Originally developed in the drug and alcohol field, over 300 clinical trials demonstrate the efficacy of MI across a range of populations, target behaviors, and medical conditions. In particular, MI has been shown to be especially effective in brief clinical encounters