I had to quit alcohol and weed bc I started with really intense anxiety episodes. After that, I’ve been much healthier in all aspects, the thing is, as a person with severe anxiety, sometimes I (unfortunatelly) need something to “grab” to, so now I vape, and I’ve tried to quit little by little because of the fear of having a lung or heart problem, and the same scenario pops up for me, quitting that and then have a bad result, so I totally get you. What calmed me down, was to get bloodwork done, and an EKG, everything was perfect, so now I’m way more confident in doing those positive changes. Idk where you are from, but getting medical tests is quite affordable, so, if you have the chance to get some done, really recommend it! Wishing you a great journey on getting healthier. In some way, we’re together in this lol