So, yeah. What Mark Twain said.
The only problem with that is the quality vs quantity conversation. You write a book. Or two. Three. Twelve. However many you need to. Are every single one of those books going to be up to par?
So as I seriously consider putting aside one of my wips, I wonder, what's caused you to shelve a project? Is it still sitting up there, or have you since dusted it off and started the rework?