The first decision maker is my ego. A situation or person, when it attacks my ego directly or indirectly causes a response in this part of my brain. The response is usually strongly felt for short periods of time. It comes and goes, but what is important to note is that the intensity of the response is high.
The second decision maker is a combination of thoughts and emotions. These are thoughts that can look at things from a different perspective, and are built over a period of time. They do not cause a strong response, and are usually more calming.
The important lesson is not to act on any one of these responses reflexively. The action must come after careful thought no matter how much you are pushed internally or externally to respond.