Does my Myers-Briggs personality type determine my long-term career potential?

No, your Myers-Briggs personality type does not predict your career-path. Your personality is a fundamental part of who you are. The Myers-Briggs Type Indicator (MBTI) is a shorthand way to describe your level of introversion versus extroversion, sensitivity to perceptual queues, and the way you evaluate new information. While these factors could individually contribute to your success or failure in a given career path, none of them can statistically predict success or failure.