I've talked about ideas before - you may remember my post How to grow great ideas from the Muses.  However, I want to discuss the invasion of story ideas.  I don't know about you, but my Muse doesn't wait until I've finished a novel before she bashes me over the head with another idea...or five. So how do you manage to stay honest to your current story while other ideas are tantalisingly waving at you from the side-lines?