Full article here (http://www.personalitypage.com/ISTJ.html)

This is what the letters stand for:

I – Introvert
S – Sensing
T – Thinking
J – Judgment

Quote #1

As an ISTJ, your primary mode of living is focused internally, where you take things in via your five senses in a literal, concrete fashion. Your secondary mode is external, where you deal with things rationally and logically.

That’s exactly what I do.  I have huge troubles with metaphors and anything abstract.
Quote #2

ISTJs tend to believe in laws and traditions, and expect the same from others. They’re not comfortable with breaking laws or going against the rules. If they are able to see a good reason for stepping outside of the established mode of doing things, the ISTJ will support that effort. However, ISTJs more often tend to believe that things should be done according to procedures and plans. If an ISTJ has not developed their Intuitive side sufficiently, they may become overly obsessed with structure, and insist on doing everything “by the book”.

I do not like breaking tradition because there was always a reason why they are set.  If I’m able to identify this reason and agree with it, I would be very comfortable living with those traditions.  It’s also true I like doing this by the book, but at the same time, I see a lot of things as situational, meaning that my actions are based on whats happening around me.

Quote #3

The ISTJ is extremely dependable on following through with things which he or she has promised. For this reason, they sometimes get more and more work piled on them. Because the ISTJ has such a strong sense of duty, they may have a difficult time saying “no” when they are given more work than they can reasonably handle. For this reason, the ISTJ often works long hours, and may be unwittingly taken advantage of.

Total truth.  I remember always agreeing to take on more work at my Co-op job if it was needed of me.  I also totally remember working on homework or other work for 15 hours straight.

Quote #4

Under stress, ISTJs may fall into “catastrophe mode”, where they see nothing but all of the possibilities of what could go wrong. They will berate themselves for things which they should have done differently, or duties which they failed to perform. They will lose their ability to see things calmly and reasonably, and will depress themselves with their visions of doom.

Totally, and that makes me a pessimist