For much of the 20th century, serious mental illness was framed almost entirely as a matter of managing symptoms and preventing crises. The recovery model, which grew out of the consumer/survivor movement and gained wide acceptance from the 1990s on, offered a different starting point: people can and do build full, meaningful lives — even when some symptoms persist.
A widely cited definition from SAMHSA describes recovery as "a process of change through which individuals improve their health and wellness, live self-directed lives, and strive to reach their full potential." The emphasis is on hope, self-determination, and personhood rather than on diagnosis alone.
Recovery ≠ cure
Recovery in this sense doesn't require symptoms to disappear. Many people describe being "in recovery" while still managing a condition — much as one can live well with a chronic physical illness. The goal is a life worth living, defined by the person living it.