Under what circumstances do people see your real feelings?
I'm a very expressive person, so a lot of people see my feelings. Just not ALL of my feelings. I try to keep my negative ones to myself. And sometimes I exaggerate my emotions for comedic purposes. So... I dunno.
Is there anyone who truly knows you?
I'll be honest - I don't like this question. Everyone I've talked to knows part of me. No one knows everything about me. I consider myself to be genuine (i.e. what you see is what you get), so I don't feel like there's a "real me", versus a "fake me". It's all me. There are just many different facets to it.
How do you differentiate between your inner circle and your aquaintances in what you would share?
I'm more open about my INNER feelings to my inner circle - the feelings that I don't want to think about, let alone talk about, but that I feel like might make me feel better to get out into the open. But for me, like what Amira said, it's a big event to do this. It's draining, and can make me sad and introspective for many hours afterwards. So I don't like to do that any more than I feel is necessary.
What makes it so uncomfortable to be explicit with how you feel?
The instinctual reaction of: "GAH EMOTIONS SCARY AWKWARD NO NO NO RUN AWAY!" Emphasis on the word "awkward".
Revealing my true, hidden, very personal feelings (when they're negative) makes me feel small, weak and vulnerable. I hate hate HATE feeling like that. I want to be the strong one, not the weak one! (And I don't mean to offend with that statement - I hold that standard PRIMARILY to myself, and if I hold it towards others, it's subconscious.)
Also, do you tend to discuss pros and cons with a person or just mentally make a (mostly unchangeable) decision of what route you plan to take? If it's the second one, on what do you base your choice and why do you feel discussion would be uncomfortable/unnecessary?
Depends on how much I trust the people I'm working with. If I feel like I'm "the only capable one", I'll work on my own. Otherwise, with capable people who have expertise (especially when their expertise is in areas that mine is not), back-and-forth is great. I like teamwork.
(Why is my quoting not working right???)
It's because you need to put a [/QUOTE] at the end of each quote you make.
Everyone - I want to understand this better. I cannot avoid feeling something and can't imagine how it would require thought to figure out what you feel. When something happens to you, what goes through your head first if it is not feelings??? I realize that some types are more independent than others. Are there really no moments when you wish that someone truly understood who you were all the way through? Or would that just feel like a big invasion of privacy?
I second everything that Matthew Z said on the point of what goes through our heads first. It's almost always "Now what?" Although sometimes there's emotion in there, but the change is minor; it just becomes "Oh god oh god now what do I do???"

And it definitely feels like an invasion of privacy when people know me very well, even with close friends. Sometimes my ENTP friend will make a blunt comment about me - something that only one who knew me well would know - and my first thought will be "Oh, crap." It's back to the vulnerability thing, mostly. I would rather be seen as strong - it's easier for me. Although the database metaphor holds some water for me, too - but only some.
Would you ever think over things that have happened in your life and assess what you liked and what should have been different? Most of the SJs I know would be more likely to just say "What is, is, so why worry about it?" So if that is indeed the case, what informs your future decisions and how do you go about gathering information?
I agree with the SJs you know - what happened happened. I don't really see the point of wondering what WOULD have happened (except that if it weren't for that thought process, there would be no alternate-history sci-fi, and I love that stuff

), since it DIDN'T happen!
However, my past decisions DO inform my future decisions. The memories come up when they're needed. I just don't get hung up about them as much as others do.