Shame in a dream often centers on exposure -- a sense that something about you, if seen clearly, would make you unworthy in someone else's eyes. It tends to surface around a specific self-judgment rather than a general feeling, so the dream is usually worth tracing back to exactly what you fear being seen doing.
For every one step that you take in the pursuit of higher knowledge, take three steps in the perfection of your own character. (Rudolf Steiner)