The Meyers Briggs Assessments gives you useful information on yourself and how that can applies to your career.  It is a widely used tool that is valid and well thought of.

www. Keirsey.com has a free version of the Meyers Briggs test.  It is a handy no cost way of finding out about yourself.  If you want to know more you will either need to pay for an additional report or do your own research.

Remember assessment information is to guide you not to pigeon hole.  If you disagree it is either because it's inaccurate or you don't recognize yourself.  Discuss with friends or a coach.