A lot of people are suggesting talking to a friend, which is good. But at your level you might consider a short engagement with an executive coach. 3 or 4 hour long sessions might give you a new attack on the problem and some ideas on how to present yourself differently.
This is a pretty good idea. I was surprised how helpful an executive coach was to talk to when you're having a work problem and you're not sure what to do. I'm not sure how to find one outside of a corporate-sponsored management coaching program, though.
