Self-management is crucial for people living with chronic diseases, but the actual process of integrating self-management has not been explored in depth. In this article, we investigate the integration of self-management into the lives of people with chronic illness. In this longitudinal study, we used an interpretive description approach. Twenty-one individuals were interviewed regularly during the first 3 years after they were diagnosed with a chronic condition. We found self-management integration to be an ongoing process that included four phases: seeking effective self-management strategies, considering costs and benefits, creating routines and plans of action, and negotiating self-management that fits one's life. The participants managed the phases according to their context, e.g., illness experience, life situation, personal beliefs, and social support. Health care providers should therefore facilitate self-management integration by providing support that is adjusted to the person's phase of self-management integration and life context.