Dear Roger: Self Promotion When You Are An Introvert?

http://www.amazon.com/dp/B0084HETDA

So I thought I had done the hard part in actually publishing two of my books, but it turns out, that getting them written, polished and coherent enough to publish was just the tip of the iceberg, actually getting them out there so people can read them is the really hard part.
I am not a very social person and when it comes to promoting my stuff, I vapor lock because I am always full of self-doubt. When you have spent most of your life being told you are the family fuck up or the not good enough girl friend or the crappy wife, or the bad mother, how in the hell are you supposed to believe you are a worthy author? After I published my main novel, I sat here in my creaky, uncomfortable chair and I debated pulling it right back down and erasing it all and calling it off, but with cajoling from my son and a few friends  I announced it on my Facebook page, tweeted it out, and even told people around me that I sort of talk to, I had some of  my family and a few friends jump up and congratulate me, but the vast majority of people I know were quiet. Its akin to coming home from school as a kid after winning the school spelling bee telling your parents and them not even looking up from the tv other than to tell you to go get them a beer.
I dont know how to promote myself. I cant hire a publicist and for Gods sake, IM SOUTHERN! Do you know what that means? It means I am very reticent about imposing myself on people. I loathe commercials, so the thought of constantly poking at people with my book and saying,"Please, for Gods sake! Read my Book! Tell me what you think! Tell a friend!" seems like a dreadful imposition. My own son and sis are hesitant to do much because like me, they are SOUTHERN and that just really screws the dynamic for things.
I need to get word out, this is my hope for a legacy for my kids, because after all, they aren't getting any support from their father, they have no trust funds or inheritance of any kind coming their way, and times being what they are, they are going to need all the help they can get.
Im still plugging away at the writing, still working at it every day and its not a job to me, its my enduring passion, my joy and my heart, and I tell myself I dont do it to get rich, but to be able to make enough to pay the internet bill would be nice, to have a whisper out there that says,"She was here, she actually did exist and she lived this." Would be nice to have recognized, I think that is what anyone wants, just that little whisper in the abyss and this is mine.