Oh wow! Such Perception Izzie..!

The thing about INFJ's is that its Fe that compels us to be overly accomodating. We are compelled to make othrs feel good and comfortable, as disharmony kinda kills us,.. it really realy affects us badly,.. more than most people can ever know,.. so we overly accomodate with fe,.. but, even though that eases any threat of atmospherics and disharmony, its a massive drain on an introverted Ni Dom, being accomodating is the lesser of two evils, but its not like Fe always fill us with fuzzies and energy. We exhaust ourselves into making sure theres harmony, at our own expense.
This is the surface most see, the smiling, accomodating easy going, bland facade, the calm exterior, .
Inside theres anger, resentment, boiling hot, at the injustice of always being the giver, always being the one whose needs are overlooked,.. coupled with a very real, though mostly hidden coldness, a certain kind of INTJ icy rationale. Icy anger, somes it up very well, ..How can something be boiling hot yet icy cold? INFJ anger is a composite of boiling hot resentment over perceived injustice or unfairness, and an icy form of rationale that lets us see people in a different light.
if the anger comes out,..in a way, its a good thing, at THESE times, you get to hear what the INFJ truly thinks and feels,.. their true pinions.
Later the INFJ will go back to Fe default setting of accomodation, but,.. you've glimpsed the person, behind the facade.
Some people seem to like the real person underneath better, theres certainly enough dynamic energy in an angry INFJ to power a nuclear station,.. but at the cost of the INFJ's precious energy resource. We are true introverts, after all, and such outward projection of volatile and intense emotion is very draining.
INFJ is never really comfortable in any mode, neither Fe, nor 'real' anger. They relax when alone, or with someone who does seem to bring out the compulsion in us to be in either extreme.
I think, in some ways, anger is the saving grace, the safety valve of an INFJ.
Its needed,.. as a fail safe mechanism, otherwise an INFJ would become screwed into the ground, in self sacrifice.
We're colder, and tougher than even we suspect,.. softer on the outside, than we are on the inside, i suspect

G. x