When I'm feeling overwhelmed with my UFOs I pick one and work on it. I just recently finished several quilt projects, plus 12 Bow Tucks bags for a craft fair, so when I finished the orders I had taken, I picked up an easy UFO for a change of pace and I'm slowly finishing them. If I get frustrated with a project, quilt, whatever, I have to put it away and do something else or the problem will get worse (in my mind anyway). Sometimes it's best to just step away from a project when it's not going well - I will come back refreshed and ready to finish.