Do you know what's causing your physical pain? I hope you've had some sort of clinical assessment since you saw your chiropractor nine years ago. You might want to have some blood tests for arthritis, or autoimmune issues etc. I'm not trying to scare you but that's a long time to be in pain even if you have a sedentary lifestyle.
I know it's hard but you might want to try setting some achievable goals for yourself each day, like calling a doctor or watching a podcast about executive function. Just getting up and making your bed or changing the sheets might give you a sense of accomplishment. Try making a list of things you do each day that make you feel even a little better about yourself, or more confident. Try to add one thing to that list every day, or even once a week. When you're feeling badly about your abilities it might help to look back on the things you've done. It's easy to forget otherwise, and get into a shame loop of thinking you're a failure. That's probably what prompts you to "blame" others, since no one likes to think they're failures and deep down you know you don't have to be.
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And in the end, the love you take is equal to the love you make.