It's not perfect, but the first time I was verbally interrupted while in heavy focus mode, given a task to do, did it immediately, and then picked up what I'd been doing with no half hour gap to have to get back to the focus was fucking AMAZING. Also, the meds lower the activation energy for starting things so far that these days I just think of something I need to do and then do it instead of sitting there frozen for 3 hours knowing I need to do the thing but not being able to make myself start. It's incredible, honestly.