I'm sure you know just as well as all of us who use the website why we continue to torture ourselves with drugs, we just can't face the world when sober.
I'm sure you are also aware of this, but I just feel the need to address this point... this is really not a healthy reason to use drugs, and I would like to think that the majority of users on this website are using drugs for reasons other than this.
Again I don't mean to call you out here but I really do think that this is a harmful stereotype to perpetuate because it's generally what the average drug-naive and drug-averse-leaning person would assume - that the only reason why people use drugs is because they can't face sober reality... which actually I think is in most cases very far from the truth. And honestly, again, if this IS the reason you are using drugs, then you are at the beginning of a slippery slope down a dark road that will not lead to anything good, and I would really encourage you to seek out other outlets, to address this issue in other ways.
On the thread topic, all that said, I am also quite familiar with the drive to keep smoking weed out of a, basically, irrational desire to just feel altered even when the actual feeling of being stoned is no longer enjoyable... I eventually got over this and realised the obvious solution, and I really think you just need to find a way to change your thinking about this also because the repeated induction of stress and anxiety is not good for you either.
Weed is often spoken of as a very benign and almost harmless substance and while I understand the reasons for this and even support it as far as it supports the cause of ending the senseless "War on Drugs", I think there is a culture around stoners and people who really enjoy weed that it is a substance that just
should be enjoyed, whereas in actual fact some people just don't react well to it and should really stop using it before they cause themselves some lasting psychological damage. In my experience also,
some of those that do really enjoy it have little real understanding of the negative effects it can have, and will say things like "You just need to relax!" which obviously while being well-intentioned is generally pretty unhelpful advice, and even harmful in that it contributes to this culture that weed is something that people should just learn to enjoy if they are drug users.
Obviously your reasons for continuing to smoke might be different, I'm just relaying my own experience, but yeah, in summary, if a substance consistently makes you anxious or induces negative feelings, it really is a no-brainer what you need to do. If you're hellbent on continuing to use it regardless then you can probably mitigate these effects by combining it with other substances, benzos, alcohol, etc, but this is not a sustainable solution, and such advice is probably not in the spirit of harm reduction except perhaps as a means to stop you from giving yourself some kind of anxiety disorder.