They are quiet, serious, and acquire success by thoroughness and dependability. They are practical, matter-of-fact, realistic, and responsible. ISTJs decide logically what should be done and work toward it steadily, regardless of distractions. ISTJs take pleasure in making everything orderly and organized at their work, their home, and in their personal lives. They value traditions and loyalty.

“Take Your Time and Do It Right”

ISTJs have sharp, fact-based minds, and prefer autonomy and self-sufficiency to reliance on someone or something. Dependency on others is often seen by the ISTJ as a weakness, and their passion for duty, dependability and impeccable personal integrity forbid falling into such a trap.

My observation is that whenever one person is found adequate to the discharge of a duty... it is worse executed by two persons, and scarcely done at all if three or more are employed therein.
George Washington

The Logistician personality type is thought to be the most abundant, making up around 13% of the population. Their defining characteristics of integrity, practical logic and tireless dedication to duty make Logisticians a vital core to many families, as well as organizations that uphold traditions, rules and standards, such as law offices, regulatory bodies and military. People with the Logistician personality type enjoy taking responsibility for their actions and take pride in the work they do – when working towards a goal, Logisticians hold back none of their time and energy completing each relevant task with accuracy and patience.