I thought that I would post these up here for you, since I did find them useful myself.
The first article is about how we tend not give the right impression when it comes to our body langauge. Click here to read.
The next article is about the habit as a women to underestimate yourself by judging yourself on what other people think. Click here to read.
These are from the Women in Games International mailing list, a mailing list dedicated to discussing the trails and tribulations of working in the industry from a female perspective.