You sound very much ike a good friend I had a few years ago. She would have written exactly the same post about me. I have lived 55/62 years with no idea at all. I just always knew chaos reigned wherever I went. Hyper focus made me very successful at my chosen career.
I cannot tell you how absolutely relieved I was when I realised I had ADHD, because it released me from all the judgement and. Failure I had carried for decades. It’s still bloody inconvenient, but now there is a reason rather than me just being shit as usual!
Every detail is similar- any space I inhabit becomes messy within seconds, my house is a disaster. I never have money because I spend all my money on shit. With my acceptance I had ADHD, the Wall of Despair followed as I reflected on the ways it affected outcomes in my life.
More and more my increased awareness has helped me moderate my behaviour so that it is not soooo irritating- I plan journeys meticulously nowadays, don’t interrupt the private conversations I overhear, I’ve even tried to stop the spending.
Your friend is also the same age as me, tell her. It may take some time for her to get her head around it, but she will. She knows all the ways she is failing, give her a chance to forgive herself for somethings she couldn’t help.
Mostly nowadays , remind myself it is a superpower!