I'm a big fan of editing myself, although how much someone needs is really hard to tell and goes by a story by story basis. Some stories seem to need more than others in my experience. There are those here that disagree with me though.

Pacing is one of those really tricky and nebulous things about stories that if it's off, is a major problem but it's not so easy to spot. That's an area that I think editing stuff down and cutting the stuff that's unnecessary really, really helps.

I also have a hard time finishing things, not so much because I don't know how to finish them, but because I get distracted by new and shiner stuff and want to wander off. Focus is totally a problem of mine.