Introverted, Observant, Thinking, and Judging personality traits. He tends to be reserved yet willful, with a rational outlook on life. He composes his actions carefully and carries him out with methodical purpose. end to be reserved, quiet, and practical. He is self-sufficient and work hard to meet his obligations. usually blunt and to the point rather than dreamy with his goals and ambitions. he often seeks solutions to problems without delaying himself.