Oooh, how did I miss this one? Great questions! (I tried not to read any answers until after I'm done.)
How would you describe your personality without referring to MBTI, Enneagram, etc.?
Hermit, loyal, mediator, optimistic, spiritual, content, enduring.
Inner world:
What makes you the most happy and most sad in life?
Nothing and everything. No highs, no lows, just contentment at nearly all times. I grumble and squee several times throughout the day- but they're fleeting moments.
What effects you the most with any response?
Crowds and chaos effect my mood the most. I shut down and HAVE to sleep. Too many perceived emotions, from other people, effect me strongly. Emotions, period, are like siren songs which I'm compelled to answer. Polite society, however, dictates I should mind my own business though lol. When you add MANY emotions, it's just a nightmare.
At the other end, simple things brighten my day- seeing the shower spider web down for a drink; smelling the wild onions in the yard after mowing; watching the kittens playing or the dogs being stupid; hearing a baby laugh.
What is your inner world like when you are alone?
I no longer have one.
What do you think about or do?
I try not to think about anything at all. My thoughts ricochet around my brain and wont shut up, so I no longer even let them speak up at all. I spend my life entranced in one video game or another... one TV show or another... one crafting project after another. And, of course, MBTI and here; learning all I can then banging my head against the wall when I forget everything just as quickly.
What do you hold as most important to you personally?
Hmmm... personal space? Quiet time? My husband, kids? My God? I can't imagine my life without any of those things, though, some distance from my kids would be really nice rofl (they're adults, living at home)
What kinds of things imprint on you the most strongly from childhood? Memories, emotions, experiences, details, moments of realization, anything...
Memories, emotions, and details, I guess. I remember being about 4 years old. I wanted to make my baby brother some jello, which was at the very top of the walk-in cupboard. I needed salt, pepper and the jello packets

I built a ladder using my little red swivel chair and many stuffed animals.
At the bottom of the cupboard were my folks' stash of Hustler magazines (seriously, parents?

) I still remember the fold out picture (40 years later!)
I remember asking my grandma, during night time prayers, why I wasn't allowed to ask for Satan to be nicer. She giggled and just said I couldn't. That made me angry and drove my quest to find God (my parents weren't religious and I wasn't raised around it except for summer visits to Grandma's).
I remember a LOT of fights, swearing, my dad man-handling my brother, my mom belittling me... I also recall a lot of "magical" experiences when I'd run off by myself into the woods; my nightly dreams; writing novellas at c. 13.
What kinds of information do you most easily remember? Is it details about the concrete environments, social interactions, intellectual ideas, your innermost feelings and world?
Ugh... unless it's a melody, chances are quite high I won't remember much about it. The details anyhow. I remember the emotions of events rather than the exacts.
What kinds of subjects or ideas fascinate you the most and hold your attention?
Typology at the moment

I'm fascinated by my religious beliefs. Though I'm not practicing nor studying (in fact, I'm "disfellowshipped"), I [self-] identify as one of Jehovah's Witnesses. I'm enthralled by the New Heavens and Earth and all the possibilities.
My hubby, however, is a conspiracist. His rants and discussions can fascinate me, as well, though I'm more level-headed and skeptical about it all.
I also love music and prepping/survival (but, because of my crappy memory, I love the idea of it more than the application).
Environment
How do you engage with the outside world?
With a smile and a positive attitude (but, secretly, trying to hurry up and get home AQAP).
What do you do or think about when you are outside yourself?
I'm not sure what that means. Like, disassociating? Outside my comfort zone?
What kinds of environments give you energy and inspiration?
Energy? What is this mythical thing you speak of? I find inspiration from musical harmonies, from nature, from the music insects and frogs create at night when the world is still.
Where do you like to spend your time?
Alone, in my c 7 X 13 foot room
How do you relate to change or stability in the external world? Which do you prefer?
I NEED stability and social harmony. If it isn't there, I try to create it.
It took me way too long to figure out a basic truth about myself. I would get very (inwardly) angry whenever someone called me a "good" or "nice" person.
I've had disturbingly dark thoughts. How could people make such a bold statement with such little interaction?
"Good" and "nice" are my armor. It's hard to be mean to or angry around a smiling, happy, friendly person.
It goes deeper than that, though. As a kid, I was such a natural when it came to micro-expressions, that I assumed everyone could read me as easily as I did them. I didn't even dare think negative thoughts about a person.
Relationships:
What are your general, social relationships like?
My husband and my kids are the only "relationships" I have.
Do you form many, few, are the bonds strong, weak? Do these make you generally happy or sad?
I've never formed any lasting bonds. That was another truth that took much to long to uncover. The short answer is that I'm terrified of hurting people, so Fort Knox was constructed around me.
Friendships and acquaintance-ships (lol) have always come naturally to me. I can talk to darn near anyone and reveal anything and everything to them. I'm an open book. BUT, normal people NEED contact. I could talk to them once a year, lol, and still consider them my friend.
I also don't trust my loyalties when I have friends (what if what they want conflicts with what hubby wants?), which turns me into a basket case of anxiety.
What are your most intimate relationships like? If you could describe an ideal intimate relationship, what would it be?
Being a submissive stabilizer/harmonizer/uplift-er. Being taken care of (I've been taken care of by someone, for all but about 4 months of, my entire life). I don't like feeling like a mooch, though, which has been hard in my marriage (which brings my hubby to tears). I feel I bring nothing of value to my marriage- not even sex, since he cut me off some 8 years ago or so (he says "health", I think otherwise). We live apart. He pays all the bills. I do his shopping for him- woopty-thrill. Saying as much REALLY upsets him though. He says

(You're such a good, nice person...) but I don't see it.
What do you require [edit: "require" is a poor word choice you can insert a synonym that works better] of other people when they interact with you? What lines do you consider deal-breakers when crossed?
Don't be a jerk to other people JUST to be a jerk. If you don't know you're being a jerk or understand how you could be interpreted as such, but you're open-minded enough to listen, then we'll be fine. Don't be abusive, or overly dramatic, emotional, or chaotic and we'll be fine. Don't TRY to make me feel stupid or useless and we'll be fine. I don't think I've ever completely cut off someone. I drift away, but if they called I'd pick up to talk or try to help if possible.
Miscellaneous:
In what situations are you most flexible?
I have no idea. I tend to bow with the wind, whichever way it blows*.
In what situations are you the most rigid or inflexible?
*Except when it comes to my spiritual belief. If someone has questions, I'll answer as well as possible. If they want to debate just to troll or to try and change my mind, then my heels are firmly planted in the ground.
What kinds of things are you particular about and what kinds of things don't matter much?
?? I'm not sure. You mean, like pet-peeves? One of my silliest pet-peeves are doors of any kind. If they're meant to be open, keep them open. If they're supposed to be closed, good gracious!- just close the darn things. None of my kitchen cabinets have doors because my kids could never learn that

But, seriously, a lot of things don't truly matter all that much. I TRY not to sweat the small stuff (or the big stuff, or well, stuff in general

)
What other ways would you describe yourself?
Too laid-back and passive for my own good.
*whew*
And now my brain is broken again. Too much of that thinkin stuff...