Project 2012: Questions on revision

Does anyone have a particular question related to revising?  I know I’m tootling along here doing my own thing, and I have some specific posts lined up, but is there anything that you struggle with?  Any part of revising where you simply don’t know where to start?  Anything on a specific aspect of revision that’s giving you grief, such as characters, voice, tension,plot?

Throw them at me and I will answer them this week.