Same here - got professionally tested.
I think 7s may be more into constantly having to be in motion and doing things.
Exactly. I've been in motion since birth and always looking for adventure and to experience things. My mom swears I was fighting against my eyelids and trying to open my eyes when I was born and I started walking (more running) an early age. I would literally run ahead and away from her and I got lost 2x as a toddler. Once when I was 3 I wouldn't hold still for a haircut so my mom sat me on a chair to wait while she got her haircut and then discovered I had escaped into a preschool/kindergarten class. I was big for my age and walked in like I belonged there so the teachers didn't bat an eye. My mom said when she stuck her head in and saw me she kept motioning for me to come to her but I looked at her then slightly annoyed and looked away because I was listening intently to whatever story the teachers were telling me. My mom basically says I drove her nuts as a kid and she not only dropped the baby weigh fast but she became 'like a skeleton' because I was always running her ragged. When I was an older child I would still eat with a sense of urgency and run out of the house to play - I was always "busy".
Even now people who know me describe me as being in motion, keeping things moving, searching, etc. For my birthday I planned an impromptu trip to Spain within a span of about 10 days and I did a homestay for a month and did a crash course in Spanish. I had never been to Europe or travelled abroad outside of trips home to see my parents and I didn't speak a lick of Spanish. Even with the shitty things that I encountered it was an adventure I thoroughly enjoyed. I WANT ADVENTURE!!??&&&!!
It is a key element of my nature and what motivates me.
At its worst, the 7 seeking turns into itself into meaningless hedonism and addiction and dissatisfaction, anxiety.
Enneagram is about what drives you to and away from things.
and 7 is what?? afraid of boredom? being trapped? not being able to experience all the things you want to experience?
7's on the surface are afraid of boredom.
But really we are afraid of a lack of agency and options.
Which distilled, is basically we are afraid to be utterly alone and forced to be with ourself and alone with our deepest, darkest fears and pain. 4's enjoy melancholy and it becomes a part of their personality and takes on a romantic, artistic focus and quality. I myself reject the idea that suffering is a necessary part of the creative process, I think that's bull, I think creation is a joy and a gift.
Options and the new days gives me hope. 7's are essentially optimistic. 6's are vigilant.
A 7 will reframe, minimize, or ignore or basically escape from a problem if it bothers us too much and the idea of fixing it or dealing with it fully makes us anxious. A 6 may become pre-occupied or anxious about even a potential problem but will figure out how to either pre-emptively neutralize it, safely have it pass it, or be prepared for a battle with all the possible scenarios worked out.
The difference between a 7w8 and a counterphobic 7w6 is that 8 is a RAGE/GUT center, while 6 and 7 are about THINKING. 8 instinctively is full and sure of itself and gets enraged that someone is challenging it (think Gordon Ramsey a la Hell's Kitchen). An 8 doesn't think or prepare for possible bad guys, it's like a bull who lunges at its target as soon as it sees it but doesn't think anticipate its prey. An 8 gets pissed off someone is in their face and says "F*CK YOU!" There's lots of yelling and theatrics or basically performance that you can observe.
A 6 is more like the paranoid survivalist hunter who knows the landscape is dotted with enemies and draws a map with and maybe builds a neato long range gun to snipe enemies at a distance then maybe yells for good measure, "F*CK YOU - YOU'RE NOT GONNA GET ME
TODAY' before scurrying back to their giant stockpile of cans in a post-apocolyptic world. If that makes sense. Dale Gribble from 'King of the Hill' is a poster child for (hysterically paranoid) 6/5's.
An 8 acts and reacts. A 6, even a counterphobic 6 *anticipates*.
6's worry more about security and also the health of the group they belong to. The group is part of their identity.
A 7's scope is more global.
A 7 feels like 'I make things happen, I can find things, experience things, make things' etc.
A 6 is more 'anything can happen to me, people can bother me, disasters can strike, I must be ready because nothing is gonna get one over on me'
I think those are accurate ^^
The question to being 7w6 or 6w7 is which part is stronger in how you identify and what primarily motivates you, also what resonates most with your nature.
I can be hella counter/phobic and vigilant but I'm essentially 7 all day, every day.
With him, I feel like doors open and there are opportunities to do something with someone! I can't go on an adventure alone, there's no fun in that--I need to share moments with at least someone. If not I'll have to brag to the universe of how I alone did went on an amazing escapade triumphantly yadda yadda. When separated (and he's usually doing something fun, I'll tell you that--right now he's in Italy with his best friend while I'm alone) I covet his freedom & happiness. He gets to do everything I can't, and with that he'll always have more opportunities than me. I feel like he's succeeding in a part of life I can't access because I have to stick to home base. 
