Being a responsible adult with ADHD means kind of doing both in a controlled way. What I mean by that is, ADHD gives you some deficits and difficulties. On the one hand, you can't use it as an excuse to not work on those difficulties and do your best. On the other hand, you also shouldn't be hard on yourself if your best sometimes doesn't measure up to other people's expectations. And for your sanity you should always give yourself breaks from working on yourself.