Two years ago I saw this this video about ADHD in adulthood through some post on hexbear and experienced a certain... feeling that there was puzzle piece missing to my utterly disjointed, disorganised, unmotivated life. Thank you to whoever posted that video. I owe you so much.
One and a half years ago I started going to a self help ADHD group in my town.
One year ago I got a lucky appointment by a new psychiatrist and started my diagnosis.
Two months later he confirmed my diagnosis and I got started on Elvanse (Vyvanse/Lisexamphetamine).
For the first time in my life I am not on a permanent collision course with whatever I am doing. I go to work, mostly on time and do it well. I can write an email or make an appointment without agonizing for hours. I do the dishes and clean my floor before it's disgusting. I only lost my wallet and phone once and even found them again. And I learn to structure and shape my surroundings and my schedule so that it works for me. I still fail often, but don't fall into the spiral of doom that would so often over take me, when failing before.
But the most important thing is this: I am not utterly miserable anymore when I wake up, agonizing over the day in front of me, over all the little tasks that seem insurmountable. I know it can be done, one step at a time. If not today then tomorrow.
Just had to get it out. If you wanna share or ask something about ADHD things, this could be a place. 
I'm working on getting a screening for my kid. I don't have a diagnosis myself, but seeing her behavior really puts a lot of stuff I struggled with when I was younger in a context that seems to make sense. It's totally weird looking at someone else and seeing a little mirror lol.
My father (now estranged) seemed pretty on the spectrum when I was growing up, so it's frustrating that my parents never saw my behavior as enough of a problem to try and help me with it.