If the very idea of "getting organized" sends you into a mental tailspin, that might be the first sign there's a problem. A feeling of being overwhelmed could well be the most important signal that your situation has gotten out of hand. If a quick glance around the domicile or cubicle sends you shuddering, you might be working with a load larger than most people can slug through on their own.
Try to analyze your feelings to see if this is the case or if something else could be aggravating the situation. Is work in general getting you down? Are household holiday preparations wearing you thin? Is seasonal depression a factor? If your ultimate answer is, "Nope, I just can't keep things together and nothing else is running past interference," then yes, you could just be a disorganized muddle. Try starting small.