I found that cannabis addiction was manageable after dropping tobacco but completely overwhelming before it. Tobacco is the worst thing there is(at least heavier more harmful drugs feel worse right away, tobacco goes away like something far less impactful than what it is) and anything you mix with it, be it coffee, weed or even going out for a smoke becomes an habit. I believe it resembles dog training where the reward you give the dog after he does something you want him to do reinforces the pathways in his brain that caused him to do it. With nicotine is the same, when you use that shit, it reinforces whatever pathways led to whatever you were doing and that's what makes nicotine related habits so strong. It's a false belief, a cheat, it's fake. It makes you train your brain into enjoying useless things that you think are good experiences but aren't, and that's something you can only recognize once you are off nicotine for long enough to realize how many habits it created for you.
I got quite angry with myself when I noticed this and this assisted with stopping it. What I basically did was 1-2 months of reducing consumption of both herb and tobacco, until it was basically a miniscule amount once a day, and then slowly dropped it, first one day off, then two days, then three days and then just completely stopped both. I didn't throw away any of the apparatus or the tobacco box because I wanted to make sure I was very rationally forcing myself to hate the thing, which I honestly think anyone has the right to do as the most logical decision ever. I never touched it again. It took many months after stopping before I could say I felt cleaner from it. In the process with the assistance of a vape I also learnt how to consume cannabis in moderation in a way that was actually consistently beneficial for me(and to be honest, found again the reason why I even started consuming it in the first place), and didn't kill my productivity or overall well-being and quality of life.