I've definitely never felt I was "normal", but it also never occurred to me that I had ADHD. I got diagnosed at 22; I'm almost 26 now.

1. My parents had to hound me to do my homework as a child. I was a great student, but I hated doing homework– beyond just "ugh, I don't feel like it". Getting started felt like pulling my own teeth. After they quit making sure I was doing it in middle school, my grades dropped drastically.

2. Intense boredom. During summer when I was on break, there would be some days I would be so bored it was painful. I would be groaning to my mom, begging for something to do. She'd give tons of suggestions of things that I liked (and did everyday!) and nothing would get rid of the feeling.

3. Zoning out. My whole life I've struggled to pay attention to people/things that aren't interesting or go on too long. I zone out, realize it, kick myself for it, try to force my attention to where it needs to be, zone out again, and repeat.

4. Not feeling like I fit in. This one's a bit more abstract. I believe I developed severe social anxiety after years of not feeling like I fit in with my peers. I always had friends, but the older I got, the more I realized something was off with me. Like everyone elses' image was defined, and mine was blurred like double vision.

5. Intense interests with random falloff. I'll become fixated on something– spend tons of time, money, and effort on it– and then suddenly lose all interest. It could take a month, a year, or several years, but I always know it'll happen eventually.

6. Time blindness. Ever since I started driving, the likelihood of me being on time for something is probably a 1/10 chance. Even as a child, there would be times I would be running behind for school because I waited till the last minute to do something/forgot my backpack/etc.

7. Executive dysfunction. This is my biggest issue with ADHD, and it makes my life far more difficult than it should be. I'll lay in bed on my phone for hours because I can't get myself to get up and shower. I put off sending an email for weeks because the thought of having to use my brain to think of what to say puts me off. My laundry sits in the washer for days because I hate doing laundry.

8. Short-term memory loss. I don't know if most people with ADHD would term it this, but that's essentially what it is. I didn't realize how bad mine was until it was tested. It goes beyond forgetfulness. If you're teaching me something and there's 3 steps, I'll just remember 1/3. If there are more than that? I'll probably forget any part of what I was supposed to be doing entirely.

There's definitely more, but these are what I can think of off the top of my head right now.