Mitch Joel brings up a good point when he says: "There is a simpler way to not only make your mark using social media, but to get ever-more comfortable with new media: You can simply start sharing content."
If you don’t feel like writing, but would still like to post a new article on your site, you can always get high quality content from Article Writing Services.
In other words, you do not have to create new content all the time in order to be successful in social media. So your blog, your twitter updates, your Facebook posts, do not necessarily have ot have new original material up there.
I know a guy who has thousands of Twitter followers just by tweeting a quote on love and motivation every day. It is not his quotes or his content, he just delivers it and builds a tribe of fans looking for a message from him every day that is relavant, personal, and anticipated.