Recovery principles and evidence-based practice: essential ingredients of service improvement.

The two of the most commonly advocated service improvement proposals for adults with severe mental illnesses are to redesign services based on recovery principles and to increase the availability of services with strong research support. The two improvement strategies complement and inform each other much more than they conflict. To improve, the field needs the insights of people who have personally experienced severe mental illnesses and it needs the scientific process. Applied together, the two strategies can guide the development of an optimal service system: The kind of service system that most people would want for themselves or their family should they have the need.