[rtpg]

A thing which I find works well for my ADD is to talk (out loud, yes) to myself when I'm doing something. I think people have a harder time getting distracted from conversations, and there's also a 'rubber duck debugging' effect in that your own thoughts become clearer.

Unfortunately this usually requires you to be in an empty room, which isn't always possible. And this is more of a micro thing, not a macro one.