An LSD experience helped me with alcoholism like a year ago. I didn't drink for like a month. Then life threw me a curveball; a really bad one, and on top of it I was 19, couldn't find a job, no girls like me (you'd think in 4 years I'd get the chance to hook up with a girl but alas) and I felt hopeless so I relapsed. I would rather relapse and be drunk than sit there sober with bleak thoughts that I can't get out of my head.
LSD can help you wake up and smell the roses, but like Psilocybonaut said it's definitely no cure. The only cure is your own willpower. Do not rely on something else to cure your addiction. Ibogaine has had some pretty promising results though. But in the end you just need to change your whole lifestyle.
If you know yourself pretty well on psychedelics then go for it. Perhaps the experience will reveal to you aspects of your life and personality that need changing, but you should be able to accomplish that without LSD. Basically all the LSD does is rub those aspects in your face.
I've quit habitual drinking quite a few times. One time was because I blacked out and it got me arrested. That was an eye opener because I never thought I would ever get arrested as I'm no troublemaker.
I just recently quit drinking because this girl I like doesn't like me when I'm drunk. It's kind of pointless because I don't think she likes me, but it's nice to have an excuse not to drink I guess.
I used to take a lot of opiates. Mainly oxycodone, hydrocodone, methadone[opioid] and black tar. I'm very sensitive to opiates though, if I snooze more than 25 - 30mg of oxycodone I have to make sure not to eat or drink anything (even water) for a few hours before and after or I will puke it up. I have been on opiate binges which have lasted like 2 weeks, but I never let my opiate tolerance elevate in the first place so I never had WD's. I had friends who were taking like 10 or 15 methadone pills a day (two of them are now dead because of this); if I take 2 methadones I can feel it for like 2 days.
About a year after my whole oxycodone binge phase I tried shooting black tar. I loved it, but I knew there was no way I could get addicted to it because my sensitivity to opiates prevents me from doing so. So I tried it a few more times every now and then. If all the gear were in front of me I'd probably do it again too. I'm not afraid that I will develop a physical addiction. The only physical addiction I've ever had was from alcohol.
In the end I guess all there is to say is stop putting opiates on a pedestal. If you are past the WD stage then there is no reason for you to have to take opiates aside from having insufficient willpower to quit.
Hope this helps man. I find that reading other peoples stories helps me realize things sometimes

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