Often, when we're going through a rough stretch in our lives, we tend to feel alone. This thread just goes to show how much more similar we all are, than different. My dark period was many years long, and all through it, when I would feel like giving up, I kept telling myself...what if something really wonderful is just around the corner, and you don't hang in there long enough to find out what it is? Well, there was no miraculous "something wonderful", but things did get better, slowly, but definitely better. And I'm glad I didn't give up.
And regarding your mom...I've discovered that when you're a person who enjoys helping people, that can be a wonderful thing, but...there are those people who will glom onto people like that and suck the life out of them if they can. In that case, you just have to shake them loose before they pull you under. Congrats to you for saving yourself. You can still love your mom...from afar.
I also tend to see the silver linings in life, and it's not because I'm any kind of Pollyanna, it's because I've seen much darker days, and most everything, in comparison, looks pretty damn good to me!
Retirement advice...start getting your ducks in a row now! You can't start too early. Talk to a financial advisor and get a plan in place. I'd suggest finding a woman FA, because women's financial needs/situation can be different than a mans, and who better to understand that than another woman? When you get things sorted out, you will be able to feel more optimistic about the future. I wish you a most wonderful retirement!
And one more thought on feeling broken...I love the line from the Leonard Cohen song, "there is a crack in everything...that's how the light gets in."