I just found this place tonight. I took the test in the book "Please Understand Me" many years ago and found out I was an INTJ. Some thoughts related to this and some questions for you other INTJs...
I'm a computer programmer. Just about everybody I know who is a professional computer programmer is an INTJ.
I had two "best friends" in high school. Both are INTJs.
My wife of 15 years, who I relate to very well, is more of an INTJ than I am.
In discussions with my INTJ friends I have learned that we share some characteristics. Among these are:
We don't like to make mistakes in front of others, to the point where it's almost paralyzing. This extends to a real fear of rejection and inadequacy when dealing with members of the opposite sex -- Rather than risk rejection or embarrassment, it is better to keep the status quo, and I know I got a lot of practice finding reasons/ways to avoid it.
When doing something we like, there's a nagging feeling we should be doing something else -- In particular, something someone else wants done.
Just wondering if any of this sounds familiar to other INTJs.