The purpose of learning about type is to help you understand yourself better and to enhance your relationships with others. Each person is unique. Every man is like every other man, like some other men, like no other man. You are the final judge of your best-fit type. Type does not explain everything.
Human personality is much more complex.
Instrument indicate clarity of reporting a particular preference. They do not measure skills or ability or degree of use. You may use type to understand and forgive yourself, but not as an excuse for doing or not doing anything. Type should not keep you from considering any career, activity, or relationship. Instrument is a self-report questionnaire designed to make theory of psychological types understandable and useful to everyday life.