There are many types of mental illness and what treatment is effective for each person depends on the type and severity of the illness and how the individual responds to the treatment. What works well for one person may not for another person. A clinician may try several medications for instance before deciding on the one or two which elicit the best response in a patient.
Patients with a mild mental illness may do quite well seeing just one practitioner, for those with more severe conditions such as schizophrenia more of a team is needed. Either way, the beginning of the recovery process should include a proper diagnosis which is normally gained through discussing the condition with a family physician or other medical professional.
Once an accurate diagnosis is given, the individual can determine which treatment route is best for them. Most treatments will include medication, therapy or a combination of both.