Final answer:
The nursing model based on the assumption that people want to control their lives is Dorothea Orem's self-care deficit theory, which focuses on patient independence and nurses' support in self-care activities.
Step-by-step explanation:
The nursing model that assumes people want to control their own lives is the self-care deficit theory, developed by Dorothea Orem. This model emphasizes the individual's ability to engage in self-care and maintain independence. It highlights the importance of nursing interventions that support and educate patients to manage their own health as much as possible. According to this model, nurses are tasked with assessing a patient's ability to perform self-care and to help fill in the gaps between what the patient can do and what they need to do to maintain their health and wellness.