I just got sucked into scanning through this thread as it was in actives last night. Well done everyone!! 
and 
to all who need them!
I have a story - I am a (unlikely) success story!
A good few years ago I had a heavy cocaine habit. It went hand in hand with the barwork I did when I was younger. I think for about a year or so I kept up weekend/odd cheeky weeknight use which was fun but definitely had a negative influence at the time. I also did some really shitty things while on it, which dented my self esteem and worth. My relationship was fucked up because of it and I knew that I did not have a healthy relationship with coke at all. Me and DP moved to another close by city so I could stop going out so much. I still found a way and we broke up.
After the breakup my usage went up massively. To most nights, before my day job, sometimes in my dayjob, at home alone. I also hung around with some horrible people at the time who I'd never bother with normally. I must say I did make my top three closest friends during my cocaine days though!
Anyway I'm not sure how long the really heavy days lasted for but basically it stopped because I ran out of money and couldn't sustain the multiple jobs I was doing to pay for all the partying while I was partying so much. Also it coincided with a summer where there was some lovely very cheap ecstasy pills around. There were definitely some very sad and scary times where I was frantically googling stuff like 'shit I'm a coke addict' or when friends used to pull me up on my coke consumption I used to make a joke out of it but really I'd be horrified. I think I decided to change my relationship with it when I'd bought a few grams for me to stay home alone with because I thought that was really sad. Maybe. I'm not really sure when the turning point was but there was one.
It took about 1-2 years for the association with drinking to go. I always used to want to ring a bag in as soon as I'd had a sip of something alcoholic 
but it's gone. I also couldn't listen to certain music without wanting coke. I think coke changes something in your brain but I am proof that you can change it back again.
I still take it now and again but I can honestly take it or leave it. I've had a baby since so my opportunities to go out and get on it are very limited and I like to think I'd never have it in the house. Well I am confident I wouldn't. I'll always be very careful with it now, I've turned jobs down where I've suspected heavy coke use among the staff because I think I could easily get back in the habit if I was around it all the time. Most of my close friends have lost a year or two to heavy drug use but we're all trying to be reasonable people now so none of us take drugs regularly. Festivals and special birthdays. Ultimately, I'll always love getting wrecked by one way or another but being wrecked all the time is not conducive to a nice life.
Sorry if this is rambly I'm on my phone 
I read Grace Jones' autobiography the other month and she had an inspiring attitude to drugs. Probably not a good read if your currently trying to stop as it might be a bit too 'inspiring' but maybe in 6 months or so for you all.