II firmly believe the only way to "retrain my brain" is to soak it daily in the Word of God. Rise in the morning reading in the Psalms. Digest it during the day by memorizing and repeating verses in your mind replacing depressing thoughts. Go to bed at night thinking on His Word. Keep a Journal of Gratitude of things you are thankful for. Gradually you are retraining your brain with good thinking. By the way, I have been plagued with depression/meds since my early 20's-I'm 70! God's medicine is best!