Hi "2012Fears";
This is a common question here. All I can tell you is that we have looked at every single "doomsday theory" regarding 2012 that we can find (and they are still coming in), and there is not a single one that is based on any kind of logic or evidence.
None of them are compelling. In fact, none of them are convincing at all, and most of them are not even reasonable. Is that an opinion? I suppose it is, but it is an opinion that I stand by based on the evidence.
So, where does that leave you, and your fears? Well, not alone, by any stretch of the imagination. A lot of people have this generalized anxiety over the future. Things like the economy, fighting two wars in the middle east, serious threats like global warming, etc., all combine to raise the level of tension in everybody, whether you are conscious of it or not. Then when something like this comes along, it is like poking a hole in a water balloon. Everything comes pouring out, and you are hard pressed to be reasonable about it, to think critically about why you feel the way you feel.
How do you deal with it? Well, one of our members posted what I think is an excellent set of suggestions here. The only thing I would add is that you can come back here and ask questions as often as you like. We don't bite.
Well, sometimes we do, but only the doomsayers.