Well then, that sounds like an avenue for further exploration. Here are some more thoughts on the subject:
I have seen plenty of instances where young INTJs get increasingly isolated, their Te gets rusty, and then they have trouble trusting people to help them when they need to use their rusty Te.
Here's the big picture:
As I understand it, Ni works like a spider’s web. The INTJ collects factoids and data in their Ni spiderweb and then churns the spiderweb, rearranging the factoids and data into different combinations, crankiing out plans and back-up plans and more back-up plans, until a solution is worked out.
It’s the way that INTJs solve problems. They come to trust their Ni churning process so much that they eventually don’t feel that they need their Te. Their Ni seems self-sufficient.
The trouble with Ni used in isolation, however, is that it’s open-ended and just churns without much resolution. Stuff just gets caught up in that spider’s web and sits there, churning away, until the spider’s web becomes heavy and unwieldy.
Te is needed to bring things to judgement. Unnecessary items need to be removed from the spiderweb, and new factoids and data need to be brought into the spiderweb to initiate new avenues of inquiry (new ways to churn the data).
Trouble is, if the INTJ has become too reliant on their Ni alone, they may not trust the outer world. The task, then, becomes to set up a network of Te confidantes: Counselors to deal with emotional issues, work associates to help with work problems, friends to help hash out daily details of life.
It’s not even that the INTJ needs to particularly love and trust these people. It’s just that the INTJ needs to practice Te with someone/anyone in order to keep their Ni efficient. There has to be a process of expelling the old data and taking in new data. Otherwise the Ni spiderweb is just going to keep getting jammed up with old, decaying matter, i.e., stuff that should have been brought to judgement and expelled from further consideration.
See this page for more info along this line:
http://www.personalitypage.com/html/INTJ_per.html