I think that a day of pampering yourself will always make you feel better. In terms of being able to cure any particular illness, I don't think so. It was founded by Samual Hanemann. The idea is that you use a very dilute amount of a substance that causes the symptoms that you're having and that this gets the body to heal itself. There is some very good modern science which indicates that at least some homeopathic remedies do work.
Naturopaths practice a mixture of many disciplines in natural healing.
Most licensed practitioners do carry malpractice insurance, including massage therapists, acupuncturists, and even some yoga instructors. The track record, however, is that very few of these practitioners are sued compared to conventional physicians. Of course I'd recommend my own book, Alternative Medicine for Dummies. I worry about people who treat their own depressive symptoms with herbal remedies without seeing a mental health professional. You need appropriate diagnosis and treatment if you have these symptoms.