There is a new product out that looks like an embroidery hoop but it just rests on the fabric. It is weighted and you can move it easily. It helps you move the fabric more easily. I bought one but lost it somewhere in my sewing room! Does that tell you something about the room?

Marilyn's checklist is the way to go:

Feed dogs down
Darning foot on
Tension set higher
PRESSER FOOT DOWN!!!!!!!
Plenty of bobbin thread (Jean's input)
Quilting needles in machine--new for each quilt you do
A glass of wine nearby
No time limit on getting project done
Quilting or "grippy" garden gloves help
Machine cleaned of lint both in mechanisms and bobbin case and bobbin race
There is also a product that is a silicone mat tht is very slippery that you can get to make the fabric slide more easily over the machine bed

Try again, you'll do it! Jean