> Am I suffering from some form of undiagnosed ADHD?

It's worth looking into this. I know people who found a diagnosis extremely helpful - even those who chose not to avail themselves of the medications available. There's several online questionnaires that would give you an idea of the kind of questions you'd be asked if you went for a consultation. Some of the traits are quiet distinct and you'll have an immediate sense of familiarity. If you find yourself saying "Gosh, I thought that was just me" then it's probably a sign. :).

Feel free to msg me and I can pass on a bit more info.