As far as bookwritting goes and not knowing the end.
I wrote two books. One of them - the first one, i just "made it up as i went". And while i never got to be a celebrity, not that that was my aim, people whose opinion i cared about liked it. thats all i cared about anyway. the whole writting deal started with making up a "quick story" for a friend, turned out i continued writting till it ended up in a bigass sci-fi setting fantasy book. but the reality is, i made it up as i went, every day, and a person reading it would give her opinion every single day and that input actually made me fix and explain some things and made the book better.
so a alive book that evolves and goes where it goes without having an endgame planned CAN work.
As for being into games, i went over my addiction phase, used to skip school for a game. i realized how bad that is and totally agree with opinions said in the cast. Im still very much into gaming (duh im on this site every day), but i do other things as well. Frankly i probably watch movies more thna games nowadays, which is quite sad state of work + studies = i get more free time on a bus watching movies than actually at home.