I became overwhelmed and depressed by the number of unfinished projects and didn't do any sewing for ages. In the end I put them all out of sight under the bed, just keeping one out to work on. Then I started following Leah Day's Quilt Along, which is helping me to stay motivated. I'm dipping in and out of several projects now, depending on what's needed for Leah's weekly tutorial. Still none completely finished, but a lot of progress and I'm enjoying myself again. Maybe you need to just focus on one item, andjust for short sessions until your energy and enthusiasm come back.