Mental health professionals include not only psychiatrists, but also psychologists and other psychotherapists. Some work in private practice, others in a counselling agency. These are people with specialized training in dealing with emotional problems, but they are not physicians and cannot prescribe medication. Your doctor might refer you to an out-patient clinic at one of the general hospitals. Hospital clinics are often staffed by teams of mental health professionals, which may include psychiatrists, psychologists, nurses, occupational therapists, and social workers.
Some people feel more comfortable about starting with a pastor or rabbi.
Many of them are trained in counselling and are able to provide referrals to helpful resources. Remember, only doctor's and hospital services are covered by OHIP, not those of psychologists, social workers in private practice or counselling agencies. This means that you would be charged according to the financial capability of you or your family. However, many extended health insurance plans provide some coverage for psychologists' services. Check with your insurance plan.