Got tested a few years back and was told I don't have it, although I check pretty much every box on the inattentive type. I need to be better about attempting other ways to address the issues, but it feels like I can never catch up to give myself enough time to make a real game plan, and when I do try things (like Pomodoro) they fall apart within hours.
Pomodoro is only one method, and it's best for repetitive work. For creative work 60 or 90 min intervals often work better since we operate in 90 min ultradian cycles.
See if you can find anything useful on our blog (or in the course).
