Read an AMA on reddit of a one Sean "Day9" Plott, a relatively famous figure in the competitive cyber gaming community known for winning world cyber games as a Starcraft: Broodwar player in 2005, and now as an Esport Entrepenuer. Someone asked him about his mindset during the day and how he remains positive (He is frighteningly positive and energetic in general) and he replied with this post:

"If you surf through some of my old posts on forums, you'll see an angry little kid. I'm super embarrassed sometimes when I see the sorts of things I used to do. Gaaaaagh.
But, I've always wanted to be nice. I like to be nice and to help out. But how does one "work" on being nice? Here's my routine:
When I wake up in the morning, I think about all the people I'm going to talk to and interact with that day. I think of how a conversation might go so I have an expectation, and I try to think of how I WANT to come across in that interaction. I think of all the things that people could be frustrated at me about, how they might say it to me, and how I can make that experience NICE for the other person. I literally rehearse in my head various situations until it sounds right.
Suppose I'm going into a performance review with a boss later that day and I think he might be angry at my recent work. I'll try to rehearse exactly what I want to say to make the experience nice for HIM. How would I posture my body language? What words would I use? How would I repair this situation? After a while of talking to myself, some possible ideas don't "feel right" and others feel really good. The feeling I look for is one of calm and relief. Ever gotten into an argument with someone in your head? Feel your face getting hot and your heartrate increasing? That's bad. Don't say those in real life. I always feel a little mental "click" when I've thought of the right thing to say. It feels warm and I feel like it'll be nice for the other person. At the end of a day, I'll reflect on how those interactions went. In particular, I'll reflect first on the ones that felt off - the ones where I felt a bit hot in the face. How could I have said something differently? How could I have communicated more calmly to this person? How could I have helped this person feel more involved? I just continue to reflect until I feel that "click." Most importantly, I take time every few days to think about all the rather mundane, dry, utterly forgetful moments and conversations throughout the day. That I think is the real trick. It's so easy to "feel fine" during a conversation and to be unaware if it's negatively affecting anyone. That's where I've found little habits I do that may be offputting, like looking away from someone as they tell a joke, laughing into the distance. Fuck that, if I'm gonna laugh, I now try to look RIGHT at the person so they FEEL my enjoyment. After years of reflecting, adjusting, rehearsing, you just become more cheerful and happy. It took a hell of a lot of work and reflection, and I'm sure I grate on people and get snippy, but it's something I think a lot about. I worry about someone having a struggle in a day, and I say the one thing that pushes it into a "bad day." Everyone has immense struggles in the own life and I don't want to add to it. I want it to be better!"

My initial impression is that he is a Fe and Ni user based on this answer. The way he describes predicting his body language in advance and how it would impact others as well as his reflections of it. I am currently under the belief that he is an EIE, but I have a friend who says he is IEE so I am curious what the minds here think about this post and whether it exemplifies Fe-Ni or Ni-Fe or anything else. Please share.

Video interview of Day9 if interested: