This is actually a great question. It's important when getting free of this crap to look at ontological issues like this....and to know that it's actually a Part of the whole TMS picture.
I believed what TMS was telling me . "I am hurt, I am fragile, There are things I can never do again". I got really depressed. Perhaps the most depressed I have ever been.
Than, when I found out it is a LIE, I realized that all of those things I used to hope for were all possible and in fact, more probable because I didn't just return to how I'd been... I got BETTER! I No longer , to this day, fear anything that is physical. I went from being super careful to damn near reckless. I had slowly begun to believe all of those admonishments about 'how to lift' and 'don't overdo this or that' and have found they are all BS. I have been ignoring them for 20 years in heavy labor with NO ill effects. Thank You DR. Sarno!
I have also passed this info on to too many people to count and of the ones who moved forward, ALL of them got better. And I with no medical training have encouraged dozens of my Bro's to defy the commands of the system and None of them ever suffered because of it.
Point is, when you start recovering , You realize that a lot of the cynical, sad projections you were having were based on a LIE so you start rethinking everything. Furthermore, as part of the recovery you start re-evaluating the way you perceive the world and some of your old hopes,dreams,ambitions modify or change completely....but they are still there hidden under the malaise!! I assure you
addressing your 1. and 2. I too used to feel lonely. I actually NEEDED that alone time to recover so that was a blessing. The Inner dialogue to healing takes focus and concentration. The most important therapeutic instruction that Sarno gave us was "when you catch yourself noticing the pain, forcefully turn your thoughts to something that is a source of recurrent agitation" (paraphrased)
That is hard to do in a group environment. It was a lot easier by myself on a bike ride than at work in a noisy shop full of radio, guys talking, power tools,etc.. I have talked with people who work in office environments or in sales and I've heard it's difficult to do when you have to paste on a smile for someone. Exploit that alone time NOW while you have it.
and on your Hopelessness. That's what the medieval medical model breeds! Because according to them you are F----D! So as long as you are buying their BS You should be depressed. As soon as you learn THROUGH EXPERIENCE that they are wrong, the same trash can full of their admonishments and diagnoses can also hold your depression.
Rationalism=Medieval structural model=symptoms=Hell
Empiricism=Intuitive understanding=Freedom=Rebirth....
and when you get there, who knows what new interests and stuff to look forward to you might have?
and what do you have to lose? ...except being miserable, lonely and depressed