If this sounds too simple, don't worry. Biofeedback is a proven technique in solving many problems. Medical science has been using it for over a decade to help relieve pain, lower blood pressure, alter brain waves, etc. Biofeedback is the complete awareness of a bodily function and the conscious regulation of that function. This technique is similar in that you become completely familiar with the state of mind you associate with creative insight.
Psychologists are familiar with the term state-dependent memory.
This is the occurrence of physical or emotional symptoms associated with a strong memory. This can occur on the subconscious level as well as in conscious awareness. These memories are used to overcome phobias and addictions. Memory of a meaningful and powerful event can reintroduce the same physical, emotional and mental conditions that were present during the initial event. By recalling this exact event and the feelings present, you can change your current relationship to those feelings.