ANSWER: You might be having trouble relating to the character? The character might be very different from yourself. You can either dig in to past memories and try to find a situation that relates or even if it is not very similar, then use a past memory that has the right emotion. Or think of a person you know well that might be a similar character. And try to figure out the emotions based on what you know about the similar person. A third way might be to study a character from a movie that is similar and done well. Analyze how the actor uses emotion and how you might achieve that same level of emotion.