These two dichtonomies have a MAJOR impact on a person's life. They define his life rhythm.

The next biggest thing is probably Staticism-Dynamicism. What it is basically is how sensetive or thick skinned you are. Static types seek arousal because they are underaroused. They are also more calm under pressure than dynamic types. Dynamic types are more sensitive to nuances, Static types tend to not "get stuck on trivia" (subtypes dilema).

The next in the ladder of importance is probably Sensation-Intuition.

The last is probably Introversion/Extraversion. It flactuates constantly. Depressed people are more introverted. Introversion can be described as passivity, and Extraversion as aggression. The same person may be passive in certain situations and aggressive in others. Both of these processes coexist.