cleaning closets

Do you ever find yourself super motivated to clean a closet, then get about 1/2 way through and want to quit?? UGGHHH!!! That's where I'm at right now. I have 1/2 of my bedroom closet sitting on my bed and on the floor, and the other half is still in there. How I ever accumulated this much junk is beyond me. I thought I got rid of a good amount at the garage sale, but obviously I have a long ways to go. We are bursting at the seams in this house!! HELP!!