I'm reading a book at the moment (I won't mention the title or author) that I'm kind of struggling to get through. It's got fantasy, mythology, action, it's well written... and yet I'm not desperate to pick it up at the end of each day. After pondering this for a little while I think I've realised why.
I'm not feeling anything!
I'm in the character's head, since it's written in the first person, but all I'm getting is an explanation of what's happening. And there's a lot happening! It's descriptive and there's plenty of dialogue, but what is she feeling?
I read a YA fantasy last year that I thought would be brilliant. It had such an awesome and original idea -- and yet it turned out to be, well, boring! I felt quite detached from the character and so it was just one event to the next event to the next event...
Bottom line: make sure you incorporate enough emotion to help your readers care about and relate to your characters.