I hate tapering

I am down to less than one week. The last couple weeks have not been fun - runs are cut short, I'm trying to keep things slow and easy, and it's getting harder to do. I'm thinking that a three week taper for a marathon is, at the moment, too long for me - mentally, at any rate. I'm not feeling as fit or a strong as I had been when I began the taper, and I'm actually getting more nervous and aprehensive as the big day approaches. Had I been doing more long runs of 12-14 miles the last few weeks, I probably wouldn't have the jitters so badly.