Indecisive

People usually writes about the things they like, their hobbies of just basically pour their hearts out in their blog. But i don't know what should i write in my blog. I could talk about books. But i still can't decide what kind of books i like most. I could talk about movies but i really don't have a favorite movie. I can talk about music, then again i really don't know what kind of music i like best. I'm having a hard time deciding.