I found this interesting little post while reading my news over breakfast, and found it to be timely, since I'm still working on finishing my narration. It isn't scientific, but it's true with what science it does mention. I've heard myself recorded enough that I'm beyond what it sounds like, but I still am not a fan of what apparently, everyone else hears. Of course, I've always liked to think I walk to my own drummer anyway...
Why you hate the sound of your own voice
And for those reading this who are also still working on their projects, I found it helpful in the beginning to think of it as a student's voice, and focus on the breathing, evenness of quality, volume - and not worry on the pitch :)
Good luck!