http://redlib.bunny5exbgbp4sqe2h2rfq2brgrx3dhohdweonepzwfgumfyygb35wyd.onion/r/AskReddit/comments/1igqrly/what_can_you_never_truly_understand_until_you
It was one of the most unpleasant experiences I've had in my life, and if that was a fully planned and prepared for withdrawal under the guidance of a medical professional...I can only imagine the torture of withdrawal from hard drugs. It's given me a lot more understanding and compassion for what getting clean can entail.