I meet a lot of people searching for something (career, relationship, etc). And yet, when it’s put in front of them, they won’t pursue it because they fear pain (getting hurt, failure, etc.). So they unconsciously (and expensively) trade self protection for misery.
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.