Introduction. Quitting tobacco consumption is the most effective measure for reducing the incidence and progression of chronic obstructive pulmonary disease, which is a global public health issue. This measure is especially effective in seniors, in whom the consequences are more acute due to biopsychosocial changes, changes that increase the probability of infection, functional dependence and fragility. The objective of this report is to describe the changes in the tobacco habits of a senior with chronic obstructive pulmonary disease after being included in an organized health care plan according to the Nursing process' stages for quitting tobacco habits. Methodology. A nursing case report under Nola Pender's Health Promotion Model and the Nursing process, articulated with the diagnostic taxonomy North American Nursing Diagnosis Association International, Nursing Outcomes Classification and Nursing Interventions Classification. Results. It was evident the senior quit their tobacco habits after the Nursing process was carried out, and participation from family members and recognition of the associated health risks stood out in the process. Conclusions. The role of Nursing is pivotal in preventing and quitting tobacco habits, which, guided by an organized health care process with disciplinary and scientific support, helps improve health conditions and manage risk factors.