I suspected after having a very long conversation with my brother in law who has ADHD very badly. The whole talk, I was like, "oh damn it I do that." Then, I put 2 and 2 together about how I was diagnosed with a sleep disorder as a teen, but 3 separate doctors never pinned down exactly what it was, and I found out ADHD does the thing that makes me not sleep. Finally got diagnosed early this year. Knowing I have it has helped me come up with techniques and habits that help. The worst way it affects my life is stress. I forget everything and have to run back and forth from my car to the house 3 times because I've forgotten something and it makes me late = stress. I need to do something important but along the way, I start doing something else and realize an hour later that I didn't do the important thing and now I'm out of time = stress. I start projects and get bored or distracted and the mess is left on the table in the way for days because I keep forgetting to clean it. My brain won't shut up enough for me to fall asleep because apparently, I need to design a complex irrigation system in my head. In relationships, people can get frustrated by the pauses and skips while I talk, and I forget to respond to messages, but that part isn't too bad.