For such an assignment, I highly recommend the Myers-Briggs personality type description of your particular type. I know that many professionals in the psych field look down their noses at it, but I find it extremely insightful and accurate for myself and most others I know. It's just fun to explore. The book Please Understand Me II: Temperament, Character, Intelligence, by David Keirsey, contains a short test that will tell you what your supposed personality type is. Then you can read that section describing "yourself." Even if you don't want to bother taking the test, skimming through it will probably give you ideas for describing yourself.

Two other authors who publish books about this particular personality theory are Otto Kroeger and Janet M. Thuesen (e.g., Type Talk: The 16 Personality Types That Determine How We Live, Love, and Work). I love their books; they have a great sense of humor. Another set of authors who aren't bad are Sandra Krebs Hirsh and Jean Kummerow, authors of Life Types: Understand Yourself and Make the Most of Who You Are.

If you don't want to have to put out the expense of buying these books, you can always go to Borders or Barnes & Noble and look through them there.

For example, in their personality abbreviations (the 16 types), I'm an INFJ. In a nutshell: committed, compassionate, intense, determined, sensitive, holistic, loyal, creative, deep, conceptual, reserved, and idealistic.

__________________
Communication is the key.