Mega Frustration

My MEGA QUILTER has decided it doesn't like me. Now, instead of gliding like an ice skater across my fabric, the thread breaks. The bottom is messy, which means the tension is off. All I did was change the needle. I changed the needle because I was told "Oh, thread breaking means your needle is blunt." I was a little skeptical, but the woman was adamant. Now, the whole thing is a mess. I have an at home lesson scheduled for next week. NEXT WEEK! I have too much to do to wait around another week. ARGH! I have major frustration right now. That and the fact that our economic stimulus check has not arrived has put me in a mood.