The least hedonistic of all types, ISFJs believe work is good, play must be earned. ISFJs are willing to work long, long hours. When they undertake a task, it will be completed if at all humanly possible. Adhering to an established way of doing things and doing them well is valued and respected. The efficiency and effectiveness of an established procedure is not often questioned.
Procedures dictated by handbooks are law.
If others violate or ignore these standard operating procedures, ISFJs are annoyed and irritated, although they may not always display this reaction. Usually, such irritation is turned inward and may be experienced as fatigue and muscle tension. ISFJs are super-dependable and seldom are happy working in situations where rules are constantly changing. Much satisfaction comes to them when they are taking care of the needs of another and they render the service gently and helpfully. When the recipient is no longer in need, the relationship may change its character, the ISFJ becoming disinterested.