I seem to have this problem where I work a lot on a piece and finish it to my satisfaction, but then listen to it a few months later and notice that the music doesn't breathe enough, doesn't allow for enough space. I guess being in the composing process and listening to it so much makes me want to move too fast through the piece/ideas since I'm so used to it. My perspective must be warped, versus the fresh perspective/fresh ears of listening to it months later.
Do you have this problem and what kinds of things do you do to help? I almost think I should make a habit of putting a piece down for a few months, and then coming back to it to make final edits then.