I'd love to hear the follow-on from that quote, what strategies Edward M. Hallowell recommends. Without that second part, his advice reads like "You ADHDers are too speedy, slow down" which is not helpful at all and annoys me somewhat. I've spent my whole life with people telling me I'm not performing correctly, but with no advice on how I can actually change that. It's usually because the person giving advice, like this Edward Hallowell, have no idea how to meaningfully help.