Sure. But first I’d like to know what a function stack means lol
ENFP
The E in your letter means you prefer to live in an extroverted fashion.
As a P, your dominant perceiving function is going to be extroverted.
Since that P is N, your dominant function is Ne.
Without a balance of extroversion and introversion (which happens a lot), you'll end up feeling like something is missing. Your second function then acts as the introverted judging function you need to balance out your need to constantly explore possibilities. This is used via Fi.
Ne stacks with Si.
Fi stacks with Te.
I can explain why in another post if you want but it's a tad longer.
So as an ENFP, your stack is Ne-Fi-Te-Si.
You predominantly like to explore possibilities. To this end, you prefer abstract concepts that can be explored as well as brainstorming. You like to think with the mindset of "what if..." or "imagine if..." in mind. Because you mind predominantly works like this, you have a habit of losing focus as a word or sentence can trigger your mind to think about other things that relate to it, but not in a way the person you're speaking with may understand. To this end, you end up being considered eccentric.
To balance this out, you have your judging function, Fi. This is an internal judging function. So when it comes to your judgments on things, many will not know what you feel about things. They may see it through your expression, need to be authentic and through actions rather than words.
Your Te works in a rather immature way, but you're aware of it. You prefer to control your environment through reason that's easily perceivable.
When stressed out, you tend to use Si to clam up and avoid the world and stick to what's comfortable to you.