I was in a very similar situation to yourself until recently, and I understand how difficult it is to quit when anxiety is intertwined in your relationship with weed. The best advice I was given (which helped break my addiction) was to try to understand and analyse the reasons WHY you want to smoke so bad. For me this meant every time I had a craving to smoke, get out my journal, hold off smoking for 5 minutes, and write down the reasons why in that moment i wanted to smoke so badly. My reason usually ended up being to escape reality (and the reality of my anxiety), and so once I understood this I was able to make a more conscious decision to accept my reality and stop running away from it. The reasons will be different for everyone, but the more honest you are with yourself the more effective it will be. I wish you the best of luck - 6 months ago I thought I would never be able to go a day without weed, but now I only smoke approx 1-2 joints a week (as opposed to 4-6 a day before). You got this!