Once you've finished the party of the year because you've placed those two little words at the end of your first draft, The End, the "I can do anything!" part of you is ready to tackle stage 2 : Editing. Sure it's all fun and games. You get to remember how quaintly you introduced your characters, and how innocent they were before you crumbled their lives in your hands like silly putty. Then you hit that same wall where past you called it a night and let future you tag team for the rest of the journey. That's when you realize that past you is the biggest asshole ever! Why couldn't past you just handle the one thing she had to do? Finish the first draft!
So current you, who was future you, who thought you just had to look for typos and inconsistencies when you forgot what you named that dude who popped up like 8 chapters later, has to figure out what the hell past you was even talking about!!!!
Current me would like to think that I will never put future me in this position ever again. Future me knows not to trust past me farther than she can throw me, and that's not very far since they have difficulty being in the same room together.
As I was telling a friend earlier today: Past me thinks that future me is kinder, more patient, and very forgiving. Current me knows that future me is a cranky old bat out for vengeance.
A word of advice for all those "don't do today what you could do tomorrow" people - stock up on treats and presents, put them in a cupboard with your name on it. Your future yous are waiting, and some of them have baseball bats! Appease them like merciless gods.
Oh, and, happy writing! :)