I, Image, like a picture in your mind's eye that shows up in a dream, or thought, as well as an image of a reality that has occurred or you think might take place.
M, Meaning, like making meaning, making sense of your reality, your perception of what is taking place, connecting the story with other pieces and parts of your life.
B, Behavior/Impulse, what movement needs to happen, move away, turn towards, fight, flee, freeze. Impulses that we can easily ignore if we don't allow ourselves to slow down and listen to what our bodies are trying to tell us.
A, Affect, what emotion am I experiencing, is it fear, anxiousness, anger, sadness.
SIMBA does not necessarily happen in order, however, if you are able to remember to slow down, your allowing your frontal cortex, the thinking part of the brain, to be engaged and the ability to function at its optimal, and your body to sense and feel, and come to a meaning that helps you to be in your functional place.