First of all ((((((((((hugs)))))))))))) I'm so sorry you're feeling sad..
When I get SAD (the seasonal thing) I HAVE to sew with bright, colorful fabrics. I also made the Happy Daisy pattern that Kathy had shared here. I only did 3 of them, but they're happy and bright and bring a smile to my face everytime I look at them.
I also did a chinese coin quilt with bright colors which is on my bed now.
If you've got bright and happy fabrics, use those..scrappy is good.. just go with the flow and soon you'll be smiling..:)