I'm finally taking meds for my ADHD and while I don't feel like I can control what I focus on, it does seem to help in my ability to suppress distracting thoughts, especially when around others. I still have to put myself in situations where distractions are less likely to happen in order to get stuff done, but it does feel easier.
So like everything else, not a silver bullet but it does help. However I skipped a day and felt like shit; is withdrawal a thing?