I’ll freely admit that even as a postdoc I suffer from quite a bit of impostor syndrome, more so than when I was a grad student. Although this feeling is widespread among academics, it is not impossible to beat. Looks like everyone has decided to speak out about it this week on the academic blogosphere. It started out last week with a great post by fellow blogger and tweep Jacqueline Gill on how she overcame her impostor syndrome. There is also this really comprehensive post (with a bucket load of links) at Neurotic Physiology.
If you’re a postdoc reading this, this post (Some days, I just want to crawl under my desk and cry) best describes how I feel some days.

PS: It gets better.