Thanks for so openly sharing what you are experiencing. It can feel like we are the only person on earth having to deal with these issues, until someone is willing to share what they are experiencing.
I am immensely impressed with the Dr who wrote that letter for you to read. I do hope you are able to look at the letter, read it and tell yourself it is the truth.
On a good day, is it possible for you to write your own letter of good news and affirmations? I have been told that if we do that, then the mind starts to believe what we tell it.
I'm certainly not discrediting what you are experiencing! Recently I have had Drs tell me my issues are all in my head. To me that is a little dismissive unless they also express how I may be able to help myself if they feel they can't.
One thing I am learning, some days I am able to distract my mind easily and I benefit, other days it is not so easy or effective, and that is okay too. Telling myself I can try again is so much better than telling myself I am useless and should be able to cope with this.
It sounds like your dog is a great companion. I have a cat who very much does her own thing!
I'd like to encourage you to continue to seek assistance and research ideas and strategies that you can put in place as well.
Regards from Dools