Discipline. It's a thorny issue with a two year old. I imagine it doesn't get easier either. This morning I hit upon a new idea. Choice.
Instead of telling James something is naughty - and I seem to be doing this with increasing regularity - I can give him a choice. So I have started asking him, "Is this good or naughty?" Ok, so my success rate isn't that high, but we are in the early stages at the moment! I think it's worth trying for a few months.
I also should add, I need to ask the question when he's doing good things to, so that he begins to understand the comparison as well as the positive feedback he gets for being good.