Making up my mind

I decided to join the Nanowrimo movement but I can't make up my mind.
I have 5 stories, 5 different worlds and they are all fighting with each other to see who gets to be written.
I also have all those little people living inside my head complaining that if I'm going to write 50000 words of anything in a month I should write about them, They have stuff to do, places to go, kids to raise and homework that should have been done last week.
I keep jumping from one thing to another and I can't concentrate because when I think I finally chose one all the other revolt against me and make it impossible for me to write whatever I was going to.
I don't know how those people who write books for a living manage to do it. How do they deal with having that much people claiming their attention and be able to get something done?
And if it's bad now it will get worst because the more attention I give to an idea, a character or a voice be more greedy it becomes.
It grows in size and in volume and pretty soon I can't even think properly with all the noise in my head.
So I decided I'm not going to chose one.  I will not pick favorites and everyone will have to share my time.
I will keep the goal: 50000 words in a month but I will not be pouring them all into a novel. I will be writing them all at the same time and try not to go completely mad at the same time.
Since this decision I was able to stop opening and closing open office documents without writing a single line and actually write 3000 words. 3115 to be exact.
I will not end the month of November with a novel but I will write and I'll actually start putting on paper the stories that I've been daydreaming about but never got around to actually write them.
I'll probably be consumed by my characters before the 15th.
And I'm really afraid they won't let me sleep.
And this is a really bad month to do this because I just discovered minecraft and I'm kind of addicted to it.
Ahhh.. chaotic and impossible, just the way I like it!