For me, setting a deadline goal and making it public works. Because knowing that there's a countdown timer showing how my editing time is dripping away really does a lot to keep me focused.
Maybe you'd need something different, but if you haven't started editing yet, I strongly suggest that you find something to work toward.
Why? Well... editing (while I love it) is not exactly the world's most exciting thing to do. I find it fun, but at the same time, it's a lot more like work than the sheer joy of pure creation as experienced during drafting.
So I need to remind myself that I am working toward something. Because I believe that editing every day is the wisest course.
If I leave long periods without editing, I have to read the story again to pick up where I left off, which wastes more time because reading the story again will either mean that I'll have to edit from the beginning, or taking more time to get distance again.
Also, if I leave the editing too late, I'll either end up taking forever to finish my WiP, or rush towards the date of completion. And rushing is hardly ever a good idea.
If I rush, I get sloppy. If I get sloppy, I'll miss some important things that need to be fixed. Which means that I'll probably have to go back and do it again. No one's idea of fun.
For the same reason, I strongly suggest that you don't see your editing goal as set in stone. Because, if you're still undiscovered, it's more important to do the job right than do the job fast.
But do what you must to get the job done.
Look Out for These:
1) Long periods without editing.
3) Feeling pressure because you haven't done any meaningful edits in a longer time than you think feels good.
How do you stay motivated during the editing phase?