Mmmm, not really. We weren't huge on that sort of thing in my family.
I think it's more like the fact that I really didn't want to do it, so now I feel guilty that I have an "out"--and one that I asked for, no less.
The deal is, when I was first assigned this project, it was before I was in my current "regular" assignment that is so overwhelming to begin with. I have enough work in my "regular" assignment for at least another part-time person (heck, probably enough for another full-time person). So everyone recognizes that I probably would not have been given this project if I'd been in my current assignment at the time.
I guess I feel like a "quitter"--which is the bigger issue for me. I don't like to give up. Same reason I stayed in bad relationships too long.