Jess, I think it's the creative minds at work here. 

As for incomplete projects, something that I have made work for me is looking ahead to the finished project.  I keep telling myself that I won't have work to put on a website (I've almost got enough to at least start one) if I don't finish.  I've even started enjoying having several pieces going at the same time so that after work when I go to my space, I have something to suit my mood.  Sometimes I have the energy to work on the project that is more difficult.  Sometimes I need the no-brainer one.  But my goal is to work on something every day, or at least every other day.  What I usually find is that they all get completed about the same time.  And then it's time to get some more going.  Today I finished some sunflowers for my next door neighbor (see oil forum); currently I have a pencil drawing started and a small oil that I'm afraid to work on because it's totally a new subject (fear makes me procrastinate).  And, I'm making notes and sketches on how to do an abstract for a friend that is 3'x5'.  Talk about variety!  It's great!  Often for me the motivation is the reward that comes at the end when that special piece is complete.

Jess, you're very talented and you've mentioned you have children that keep you hoppin' (I remember those days!  I had three 2 years apart).  You may take longer to finish than some, but you've been posting, so don't be hard on yourself.  It may take time to find your rhythm.  Something else that I discovered about myself - I didn't paint, draw, or whatever on a regular basis until I made a committment and designated me a permanent place in the house.  I also set aside Saturday as my creative day - no other responsibilities are expected of me.  It's made all of the difference in the world.  You just have to find what works for you - maybe you can get a couple of half days and swap kids with a friend.

I hope that I have encouraged you. I always anticipate getting to see your next drawing.  You're very good.