Hi @Former-Member
Your articulation seems excellent to me, and I typed out this reply before remembering you said talking about it stressed you out further. It is hard to talk about this stuff. Let me know if you want to take a break from it and I'll give you some space. But I'm hoping what I typed can be valuable.
You've said several phrases that I experience myself. The difference between what's logical and what's emotional can be vast. It's a constant battle I fight in my own mind, when I know what needs to happen logically but the emotional side is just screaming to run the other way. It's exhausting having to do battle with your own brain. Some days you feel like you just can't make worthwhile progress, and that's when you have to be kind to yourself, and forgive. It's a bad day, hopefully tomorrow is better. This is all WAY easier said than done and I'm giving you advice that I often fail to follow myself. But it's advice I've heard from multiple people in my support network including qualified psychologists, and when I do succeed then it definitely works.
Fear of slipping up and losing a good habit forever is not one I've had personally but a friend uses self-neglect as a signal for his depression. Not doing a basic self-care task means you need to try extra hard to do all the "right" habits that will help you. You won't lose it forever if you put in the work as soon as you notice yourself slipping.
Have found the same with drinking, in the moment it helps A LOT. For a couple of hours I'm "cured", I can escape, and have a break from my struggles. But the next day I am irritable and craving the same sort of release. I tried resisting the urge, and if I can manage not drinking at all for 4-5 days my mood improves. I then realised it's a cycle I don't want for myself. I haven't quit entirely but my consumption is much less. It has been difficult to cut back.
As for being overwhelmed just sitting in your room.. that really sucks and I have felt like that as well. Is your mind is elsewhere, thinking about other problems that seem insurmountable? I have a "what if" machine that is exceedingly difficult to turn off, and it comes up with all kinds of catastrophes that I'm sure will come true. The catastrophes of course spike my adrenaline/cortisol, and then I'm in an anxiety attack that's hard to get out of. None of the catastrophes have come true so far, but the machine is sure it's right about the next one.
The best help I have found for this is meditation. I have some guided ones on Insight Timer app that I go to, and sometimes I have had to do the same meditation 3 or 4 times in a row before I could calm down. Meditation is another coping skill that I tried for a long time and had no success with, but finally something has clicked and it works, but slowly. And I need to do it at least once daily (at least twice if it's a workday) or the effectiveness drops. When you succeed in meditating, your mind is purely concentrating on the exercise. It's a flow state, and all your worries disappear during the practice.
You don't wanna know how long I spent typing, reading, editing, re-reading, re-editing this message... LOL. I'm always worried I'm saying something upsetting, or implying I have THE correct answer or that any of this is easy.
Hang in there. There are lots of other people who struggle and are also trying to figure it out. Many of them, you would have no idea by talking to them. We are excellent at hiding our struggles, but it often helps to talk it out when you have someone supportive to do it with. Indeed, one of the psychologists's exercises is "what would you say to a close friend in this situation?". It makes you take a different perspective for a moment and that can be helpful.