Managing chronic illness and multimorbidity in older adults increasingly relies on interventions that promote sustained self-care—often through digital tools such as health apps or remote monitoring systems. In this context, motivation to change becomes essential, yet frequently emerges as ambivalence: a tension between readiness and resistance to change. Motivational Interviewing (MI) offers a structured and relational approach to explore this complexity. This study, conducted within the national Age.It research project, investigates how motivational orientations—toward change or resistance—are linguistically expressed by older adults in the context of digitally-supported self-care. Forty-five older adults (aged 60-80) with multiple chronic conditions participated in a single MI session aimed at promoting engagement in adapted physical activity (APA). The sessions were transcribed and analyzed using the Motivational Interviewing Skill Code (MISC), which classifies statements as Change Talk (CT) or Sustain Talk (ST), and categorizes them into three psychological dimensions: desires, needs, and perceived abilities. Sustain Talk was more frequent and nuanced than Change Talk, especially in expressions of doubt regarding both physical effort and the use of unfamiliar digital tools. Desires in ST reflected avoidance of decline and aging; needs emphasized safety, control, and emotional stability. In contrast, CT was linked to aspirations for health improvement, autonomy, and relational trust. These findings highlight how resistance is often shaped by emotional and technological discomfort. Understanding the language of ambivalence and markers of change in older adults may help tailor motivational interventions that foster engagement in digitally-mediated self-care pathways.