Will the Editing Never Cease?

I am re-re-editing my first book. Even one of my roommates got exasperated with me when I told her I was at it again, wondering if I would ever finish it, but I got a fresh burst of creativity and found a lot of places where I could make it stronger. It's been long enough now since I looked at it that I lost some of my attachment to turns of phrase that can upon reflection be improved. I am readying it for e-publication, and I figured it's been this long, why not make a last push and make it as perfect as I possibly can? I'll know when I am done. Again, I learned so much writing the second one that I have found new avenues of self-expression that I can bring to prior work. It just seems slightly underdeveloped to me now, and I know how to fix that. What's a few more months in the course of a lifetime?