1. GTD should of course be GTRTD (Get The Right Things Done); it just ain't so snappy.
2. The highest, absolutely highest level of productivity is sometimes to say 'stuff it'. Enough is enough. Home, James!
3. Start small (1): get to meetings on time.
4. Start small (2) : finish meetings on time.
5. When you write lists of stuff to do, ensure every line is a small tangible action.