Katie,
You have already established you are not alone in this and believe me I have been there in the past. I am going to dig out some postings and threads of mine which may help, so you can read at your leisure.
What I would say is, bear in mind not all managers want to be managed nor think they need to be managed. I moved departments last November and my previous boss no longer has a secretary due to a company reshuffle. He actually didn't miss me until I moved on and it was only then that he realised how much I did for him.
It's a learning curve believe me and one that may take some time to change.
http://www.deskdemon.com/dnet/index.php?topic=9672.0