One approach to improving your life is to take a personality test. One useful mental model for understanding theories of personality is the OCEAN personality model, where we can describe a person’s character by five dimensions. OCEAN is the Rolls Royce of personality models, with psychologists able to map each factor into an actual biological brain function. OCEAN personality model The OCEAN personality model consists of the following: a) Openness to New Experiences Openness to New Experiences measures how much you prefer novelty over the familiar. Folks with high openness to new experiences tend to be more intellectual and have more aesthetic interests. Those with less openness to new experiences tend to be more conventional in outlook. You can assess a friend’s openness by looking at the books on his bookshelf. If the books are on varying subjects, you may be dealing with someone with high openness to new experiences....