To dream that you are dreaming or daydreaming signifies your emotional state. You are excessively worried and fearful about a situation or circumstance that you are going through. Dreaming that you are dreaming also serves as a layer of protection from what you are feeling. The dream within a dream allows you to experience certain difficult feelings that may otherwise be too painful to confront if you were directly dreaming the scenario.
If you dream that you are interpreting a dream, then it means that there is a waking problem that you are trying to find an answer to. Your subconscious may be trying to tell you that the solution may not be obvious.