For the most part I presume that people will not take the energy to either like me or dislike me, but will rather be indifferent to me. I do have trouble networking because I have not mastered that fine art of appearing interested and retaining names, faces, etc. (I can do one or the other). My boss, who is otherwise a cad, can appear terribly friendly at those things and still get his own pitch across.
What I do worry about is whether friends really like me. Friends who say they'll email me after some event in their lives is past, but never do. I stress over people turning down my parties--do they really have something else to do or do I give crappy parties. Do I bore them? Annoy them? Do they tolerate me for my talents, but really don't want to spend time with me (this is partially guilt, because I have other friends that I decline invitations from because they bore me or annoy me or tax me or just drain me). So I spend a lot of energy wondering if my friends like me, but very little wondering if strangers do. Am I at the bottom of their friendship list and if so, is that like being a doctor from the bottom of your class--what is the point?
What is odd is that I find most people would rather imagine active antagonism than realize that they are simply not important enough to rate.