Answer: Do not worry about the world ending. The full explanation of it is quite extensive and has to be explained on a soul level. But the short version is that it is "consciousness shifting" not the end of the world. Its the end of the way we look at things, the end of the things we believe are true, the end of the limitations we hold so close that they have defined our existence.
Its a bit like a TV show like candid camera - or punked. :-) we are all being punked. And in 2012 we are all going to find out the "experiment" we were subject to. The Lies, The Programming, The control. If we get angry and react - we will suffer - if we graciously accept it - we will rise about... thats the shift. Nothing else.
Bodies are a complete reflection of our mind- so as the mind expands the body will also shift and will have to change to hold the bigger, brighter you! So prepare the body- focus on it, meditate on it, eat well, sleep well, exercise a lot- become strong - as who you are is a strong empowered goddess! So you will need strong body to adequately be yourself. But death is not the consequence! You can quote me on that :-)