Understanding and Doing

Sometimes I understand things but don't live my life in accordance with my thoughts. I've developed a theory of sorts and i know its flawed but here it is.

I think that there are 3 levels of doing.

1) Conscious thought or the understanding (in your mind) of what you believe in is correct.

2) Sub-conscious when your body understands whats it thinks is correct like instinct.

3) And doing the actually act of acting upon stimulus.

I think these three make up how we really respond and how people view it. I'm not sure of any of this, i would like to know how everyone else takes what they observe and transfers that into genuine thought out actions.