When an ESTJ says "I do", you can bet that they will put forth a tremendous amount of effort and energy into fulfilling their commitment to the relationship. They seek stability and security in their lives, and once they have made a commitment, it is lifelong and unalterable. They bring with them into the relationship a strong and dependable nature, which is oriented in traditions and security. They are highly energetic people, who never seem to lose their energy when performing duties and fulfilling obligations.