We could make a list. It could be scary....,. Years ago some of us made a list of all those UFO's. We worked only on them, nine months later, all of mine was done. For two months afterwards I had no projects started or works in progress. It was a dull time. The cure was simple, start one project, except working on only one is boring. The solution was simple, start as many as I want to, it is what gave me back my mojo!
We all start the ones that grab our attention, knowing we will be compelled to make them. As to when they get finished, that is an entire different story. Making sure everything is all together, pattern, fabric to finish it at any given stage, is good planning. Never having to worry about not being able to finish a project. Can you work on one project only, from start to finish? Do you get bored, is this the reason we start more than one project, rotating them to keep active interest in all of them?