When you are writing, you have to love all your characters. If you're writing something from a minor character's point of view, you really need to stop and say the purpose of this character isn't to be somebody's sidekick or to come in and put the horse in the stable. The purpose of this character is you're getting a little window into that character's life and that character's day. You have to write them as if they're not a minor character, because they do have their own things going on.