Another thing I learned at the sewing expo was how important using the right foot for your machine and the right needle. If you are having trouble with your thread breaking while you are sewing, check your needle. You may need a larger needle. (heavier duty) You know all those feet your machine comes with, how many of them do you use? Over at A Woman A Day she has a great tutorial for using a binding foot (flat fell foot). This is a handy foot for those of you who use bias tape to bind your quilts. It gives a smooth even stitch and helps feed the tape through the foot.
This foot will also make the seam like what is on the side of your jeans. Watch the video to see what it will do. Video from A Woman A Day blog.