ADHD

I think I'm borderline ADD, but never felt the need to see a doctor. My personal workflow is to "assume I forget everything by tomorrow". Each day, assume that "tomorrow me" is a completely different person who has forgotten what I was doing today. This sounds debilitating, and probably is for normies who can rely upon their memory to keep them motivated on a daily basis. But ADD people cannot do this.

What's the solution?

You need to build and retain one key habit. Keep a notebook that contains the notes from yesterday (or even a few hours ago), that you can consult. While our memories / motivation suck, our habits are something you can reliably change.

It doesn't have to be a physical notebook, it might just be a notepad.txt file on your computer desktop. It might be a blog, it might be a word.doc file. Or in my case, it really is a physical notebook that I write into repeatedly and spend a decent bit of time rewriting important bits. (Note: tomorrow me isn't going to read more than 1 or 2 pages behind. This means I need to rewrite important data over-and-over again to where the bookmark is).

Yes, this means you effectively have a daily memory that consists of no more than 2 pages, maybe 3 pages (or whatever "tomorrow you" will reliably read). That's fine. Work with that. Build the habit and continuously reference the notebook. Write notes to yourself, future you, about what you were doing, where you've come from, words of encouragement. That's all you need, just one or two pages worth of "memory". Never shy away from rewriting important things. Always remember that you only have a 1 or 2 pages worth of attention at best, so rewriting is key to carrying memories / motivations over more than a day ago.

You still have to work on the habit though and you can fall off the habit if you get lazy. But habits are something easier to keep than actual memory or motivation in my experience.