You should look into neurofeedback which many people have used as a substitute for depression or anxiety reducing drugs. I would suggest you only do it under the care of a professional, and not attempt doing it yourself as you could make your condition worse. In the U.S. at least, neurofeedback is usually not covered by insurance, but it's also not regulated which makes it relatively inexpensive. I did mine under a nurse. You might notice improvements after the first session, but will probably need at least 20 sessions to see any permanent changes. Some people don't respond at all to neurofeedback.