All I know is the stuff I learned in therapy ages ago for something unconnected to life now I still use every day cos it works.
Well running through the questionnaires for ADHD, there are a number of Qs on it where I'm not like that now, but only because I worked out life hacks for myself years ago e.g. I don't miss appointments - because I over-diarise everything, I don't miss steps in completing work - because I make myself follow strict lists.
Whereas the techniques I was taught doing CBT for depression only work sometimes when I'm at the bottom of the pit, and TBH reading up on it, it looks like my occasional bouts of depression could well be ADHD related!