Yeah, a lot of brain things are like that. The way I look at it is, everyone sees a little of it, but some people see a lot of it. If you see a lot, it's not self diagnosis to say "I have a lot of symptoms in common with people who have this, so I asked a professional".

You also don't need a diagnosis to practice some of the coping strategies that people have that are non-medication. If they turn out to be helpful, that's maybe a another reason to ask a professional.

Self diagnosis is a bad idea, but it's also a bad idea to ignore marked similarities you see between yourself and others. And stuff like "always put your keys and wallet in a specific basket" is only the cost of the basket.