Is it possible for you? Maybe
Is it possible for someone to do? Yeah, I did.
Most people use therapy or alternative meds/placebos as a frame and build on that.
I didn't, I crushed what little of a personality I had after 4(+) months solid depression (topping long depressive trend) left me a burnt out shell and built a new one with only a superficial resemblance to the old one. It mostly worked, but Currently what I did to myself (and what I gave up (starting with what you'd call morality)) to beat this is my single biggest trigger for depression, so I wouldn't recommend you try it.