If you can go cold turkey, I sincerely believe that's the best route. Having said this, without knowing the state of your health, I cannot advise this, as it may be dangerous to do so without pharmacological help; only a doctor can make this determination. I managed to replace alcohol (and cocaine) with copious amounts of water, increased coffee intake and some sweets (initially only). And, slowly improved my eating and exercise habits. My sobriety has improved incrementally over the last 1.5 yrs. I voluntarily checked into an outpatient rehab and started going to AA meetings. I have found that ending all contact with former co-users has helped. It was a combination of many things, on different fronts. You may really want to consider taking a semester off and finding a quiet space somewhere to heal. Staying at my folks place turned out to be a mistake though and I have managed to find some peace of mind living on my own, in my own place. If you can afford it, some travel can make a difference too-provided you are willing to see it not as an escape but an opportunity to gain a better perspective by immersing yourself in another culture for instance, maybe learning a foreign language, trying something outside of your normal comfort zone (or curriculum). One program immediately comes to mind and that is WWOOF (Worldwide Opportunities on Organic Farms), an information service linking travellers with organic farms which promote sustainable farming by hosting travellers for free. You could go to Costa Rica for example (or anywhere else in the world) and work on a farm, in exchange for room and board and all you would have to pay for would be a plane ticket. Regardless of what you do, it is essential to take radical measures; become as energetic about getting healthy as you have been about getting your next fix. I wish you well.