I went through a fairly rough withdrawal from marijuana myself. I haven’t gone through opiate withdrawal or anything really seriously physical, but for me it was worse than quitting smoking at first. (The nicotine withdrawal lingers alot longer though.) I remember thinking when I smoked every day how addicted I was. I couldn’t imagine a life that did not involve it.
I’ve found that if I’m not around it all the time, and don’t have easy access to be able to buy it whenever I want, it’s not that big a deal once I’m off it for a week or two. I tried the method of buying some and only smoking once or twice a week, but I could not do that. I’d just think about it all the time if I had it in the house. And if I buy some, then go a while without before buying again, the repeated withdrawal (maybe I shouldn’t be using that word, since it’s supposedly not physically addictive, but that what it’s like for me) is just not fun. It totally fucks up my sleep every time I go off, and it makes me grumpy and unpleasant.
Lucky for me, none of my friends smoke and I don’t have easy access to it, so after a while I mostly forget about it. Sometimes I think how much fun it would be to get high and go do such-and-such. I wouldn’t mind being able to get a little for a concert festival this weekend. If somebody offers me a hit, I always say yes. And my tolerance has plummeted, so one or two hits will have me ecstatic for the next six hours, heh.
I don’t know if this is helpful for you, it’s just my experience with it. But there are a million people who will tell you how weed isn’t physically addictive or it’s totally harmless or whatever. People will try to make you feel weak for thinking you are addicted to it. But for some of us, it can be addictive, whether physically or mentally or whatever it is, it can have a very strong hold on you.
If you want to quit, I’d say the most important thing is not to hang out with people who sell it or smoke it. Then try a month without it or something like that. If you are anything like me, it’s going to be rough at first. You won’t be able to sleep, then when you do, you’ll have some intense dreams. You’ll be in a bad mood all the time. But it really doesn’t last forever, even when it seems like it will. If you can make a good not-high life for yourself, with good people to hang out with and interesting things to do, it will become Not That Big Of A Deal relatively quickly.