I find it useful to tease out the different inputs. Perhaps it is not a coincidence that the psychologists of old were known as alienists. Let me describe an exercise I have synthesized from a variety of sources. YMMV. I use variations of this technique in a variety of circumstances to attempt to identify sources of discomfort or hidden motivations.

Humans have a tendency to create a false internal geography of their bodies. While this is a hindrance for objective medical assessment, you can turn it into a strength. Consider the tells of eye movement. Up and to the left is imagination, up and to the right is memory, down and to the right is consideration. While these are common side-affects of the functioning of the conscious mind, they are also an external indication of internal geography.

To begin labeling "the voices inside your head" you first need a baseline. This can be a difficult starting point. Find a situation where you are mentally and physically at ease. At this point take a mental kinesthetic snapshot -- label in your head a memory of your body state as the baseline. This is not an exercise in detail but of gestalt.

Reinforce this memory sufficiently so that there exists a distinct memory of your baseline body-mind state.

Once you have a strong baseline for comparison you can begin finding deviations. If you are given to partake of alcohol or other recreational intoxicants, then you have ready experimental material. Have a drink and then try to bring the baseline to mind. For a stronger example, have a drink among friends and then step into a a quiet room and bring the baseline memory up for comparison. Since so much of our behavior is cued by our circumstances, you should see a significant change when your sober state is in front of you (in memory). Much of your brain does not know the difference between memory and direct sensory input.

Now that you have practice comparing states of your brain, it is time to start organizing. Find a part of your head or body that seems to best correspond with inebriation and associate that region with the sensation. Especially if you are an American, associate a region of your head with the desire for fatty, high calorie foods. Tiredness is another common brain state that can be labeled. Locate libido wherever you feel appropriate. Continue as you find more identifiable inputs.

The creation of a map of your consciousness is meant to raise awareness of you internal state. The practice becomes useful when you recognize organic influences affecting you without explicitly looking for them.

I find this technique is useful when attempting to "sober up" and when trying to identify and clear psychosomatic illnesses.