Honestly, I'm not that "peace focused". For me, it's a matter of keeping integrity and doing what is right, not just keeping peace. Sometimes this means disrupting peace. For me, peace is often a good result of acting in line with what is right, and also harmonizing thoughts, feelings, ideas, facts, etc, so that there are not incrongruencies which can trouble me. I spend more time working out these incongruencies than taking any action to make or maintain peace, so I guess you could argue I'm focused more on inner peace, but as noted, that is not the goal. The goal is refined grasp of what is good, true, etc, so that when the time comes to act I am able to do the right thing, as opposed to following some questionable social script.
This page is discussing INFJs and INFPs, and while I take issue with some phrasing and details (and the inevitably shallow grasp of Fi and equating feeling too much with emotion), I think overall it makes some good points, especially regading Fe and Fi.
It notes how Fe can be selfish, which is not something pointed out enough (too much harping on Fi for this, although selfishness is not a feature of any function itself).
I appreciate this line:
it’s more helpful to see it as “serving other’s needs first in order to get your own needs met†(Harmony) versus “honoring one’s own experience first in order to honor other’s experience†(Authenticity).
Unhealty Fe can turn into "manipulating others under the guise of serving them in order to get your own needs met" and of course Fi can become "honoring one's own experience at the expense of others" . This happens with Fe way more than is spoken of, but the talk of Fi selfishness gets done to death.
I think a better description of Fi is "understanding one's own experience first as a prototype for human in order to understand others' experience or the general human condition". In understanding this, then of course you have an inner model to guide you with people in real time. Another way of putting this is Fe focuses on the "space between us" and Fi on the "space within us", so that Fi doesnt really discount other people at all, just has more focus on their inner state than the interpersonal dynamic.
Here is the page:
INFP vs INFJ: 5 Surprising Differences To Tell Them Apart : Personality Hacker