> ... by reading the textbook* on it [ADHD], it kinda seems I do ...

There's a reason why most of the books I've read on ADHD have mentioned "Don't self-diagnose; get an expert to diagnose you." Short version: many of the symptoms of ADHD such as distractability happen to everyone, or nearly everyone, to some extent. Everyone can be distracted by a random thought; most people shake it off and get their train of thought back on track. Some people are more distractable than others, but it's perfectly normal to be distracted now and then. Which is why most people reading an ADHD book will recognize some of their behaviors in that book.

My opinion? (And note that I'm not qualified to diagnose anyone, so this is strictly an opinion). If you read the ADHD book and go "Hmm, maybe that describes me, I'm not sure"... then chances are that you do not have ADHD. Because my own experience was reading an ADHD book and going, "Whoa, whoa, whoa. Wait. I know for a fact this author never interviewed me. So how come he's describing me perfectly?" Not in every single chapter — I don't have emotional-regulation problems to nearly the level that he described in some of the case studies, for example. But when I got to the bits about starting projects and not finishing them, or the parts about getting (seemingly-paradoxically) hyperfocused on some task and not noticing when other people are talking to you, I just shook my head and laughed, because he was describing me to a T.

Now, even if you don't have ADHD, that doesn't mean some of the organizational techniques mentioned there won't be helpful to you. Go ahead and apply them: many of them do help even the people who fit more into the "normal" part of the distractability spectrum. But certainly do NOT try any medication without having gotten a diagnosis first. Some ADHD medications can have side effects that should be watched for, and most of them are controlled substances in most countries I'm aware of (due to the possibility of addiction if you take way more than the amount normally prescribed, for example), meaning that in most countries, it's illegal to take them without a prescription.

But go ahead and apply some of the suggestions about ways to organize your life: they can be helpful even if you only have a normal level of distractability.

Parental device use and the adolescent-caregiver attachment bond