I think you shouldn't even try to self diagnose and get a professional assessment instead. To give my personal anecdote, to me it sounds more like depression. I have ADHD (diagnosed at a very young age) and the thing is I very very much want to do the boring stuff. However the procrastination and forgetfulness is almost unavoidable and much worse is how hard it is to focus. Couldn't read a page of a book if the window is open and I heard the slightest bird chirp. Need absolute silence and order to be able to focus on the task at hand.