social theory: the best way to make new friends is to invite people to do an activity that will occupy enough of their brain capacity such that their defenses will be down and they’ll be a more open version of themselves
Your milieu is not the same as your sister’s. It is an ever-shifting, individual configuration of information flows. The Twitter feed you have curated is a milieu. Your friend group (which is not the same as the friend groups of the other people in that group!) is a milieu.
It is by changing your milieu that you change yourself.