if tomorrow will be the end of the world.....

What made you to change your mood to think in the negative direction? Why are you afraid of this danger? I don't see any scientific reason to happen any thing like this could happen in near future. There must be some thing wrong about you it seems. Are you expecting some failure in exam or interview or else? If that's the case you just pray the god and every thing will be alright. May God bless you think in a positive direction in life.

I would go around playing around with family and friends. Just having a general good time with them and then would happily go ahead and meet the end of the world. If I can be with my family and friends at that moment that is enough. As they say "One for all, All for one!!" Cheers! Ram