id stay the fuck away grom the gpen i had one id dident come with that glass thing id was def combusting
If you have the Elite it is quite good, it has a ceramic bowl with indirect heating so it doesn't burn. The two issues are how fine you have to grind and, especially, the battery life which is a real pain in the ass. Other Grenco pens, that's a different story.
Now, getting a therapist to help with the anxiety will help you as far as life in general goes, and you can replace the nasty tobacco smoking with an e-cig using juice with nicotine in it. Your friendly neighbourhood e-juice shop should have "testers" so you can find what you like, but with a massive amount of flavours out there you can mix and match to your heart's content (whisky and watermelon for me today). So that should help on the tobacco front, you get stressed and push a button instead of firing up a lighter. On the vaping weed front, that's where the fun starts as I found out the hard way how many variables are involved, the most crucial ones being, as usual, the quality of the weed and how fine you grind it. When I got it right, I could barely get off the couch. Another option, obviously, is to get a bong/pipe/chillum and smoke pure weed instead of splifferettes. You can also find "recipes" to make weed e-cig juice, nice and stealthy as hell. And, of course, there's edibles, make yourself some space cakes instead of smoking.
So there's ways to enjoy weed and get off the tobacco, the biggest thing regarding the tobacco is keeping yourself busy, as if your mind is busy then you don't think about a smoke. As I say, I can't do anything like I used to be able to but you can get out and just go for a walk in the relative wilderness nearby, avoiding Drop Bears of course, where you have the calming sounds, sights and smells of Mother Nature at her best. You might even find a good spot to drop some seeds out of sight of others so you have a reason to go for that walk, which would be a bonus, but the more you get out, even alone, then the bigger your "comfort zone" grows, you feel your physical condition and fitness improve, as you see other people out there then your anxiety can drop, even if you just say "hello" as you pass each other it's still "safe" human contact which can help reduce your anxiety, etc.
The first couple of weeks can be hell, that's why I suggested doing what I've done and get nicotine replacement stuff, whether that's gum, patches, inhalers, sprays (I have the spray now) or vaping, then you can start replacing things at a pace YOU'RE happy with as some people can just stop dead, others like me can only cut back bit by bit until the number of cigarettes smoked drops low enough to say "that's it, no more". Like with your anxiety and so on, it's a process, and with your multiple issues then a therapist would likely be of benefit to help you find the mental strength that's buried inside you somewhere, you just need to find the right key to unlock that door between your ears.
Once that's done, the world is your oyster. You'll feel better with yourself for getting off the tobacco, and that will improve your overall mood meaning less stress, and so on. You've nothing to lose but everything to win, so go for it and remember one thing, no matter what, you're bigger than the addiction, and that's before we think of how heavier your wallet will be when the tobacco is gone.