Introduction
Sensitive and Self-reliant on top of the Navigator: things reach you fast and fully, and you carry them yourself. The plan is sound, you've checked it twice, and at two in the morning you check it a third time, alone, with the lights off.
Under pressure
A tone in an email, a date that moved, a silence from the one person you were waiting on, and your mind is running the ways it could go wrong. From outside it isn't chaos: sentences get shorter, the plan gets tighter, and people see the output, not the night before.
Inside, it's a lot of weather. It's also why your plans are so well covered: you've met each storm once already.
When something goes wrong
You don't call. You write it down, rerun it, find the gap in your own thinking and fix it before sunrise. By morning you've turned the weather into a list.
People close to you learn there was a night only from the shadows under your eyes. The price is the company you could have had at two a.m., someone saying "that's smaller than it looks". You might have believed them.
How the two fit
Of the four Navigators, you see the storm earliest, which is why your plan survives it. The cost: you pay twice, once in your head and once in the plan, and nobody else sees the first bill. It goes better when the plan gets shared, not only the worry. The Still, Warm and Tender Navigators get there another way.

INTJ
ENTJ-TS
ISTJ-TS
INFJ-TS
INTP-TS