people, proximity, alone-ness… and sartre

so i recently stumbled upon a post in which someone briefly summarizes “sartre’s objectifying look of the other”:

by knowing you are being observed by another being — you become the object (you believe) the other sees you as. a forfeiture of your existence’s inherent subjectivity just from knowing (or even thinking) you’re in the eyes of the other…

as small as this piece (of a much larger collection of ideas) is, it helped solidify something about myself i’ve been struggling to be more accepting of. this thing is that no matter who the person is, no matter how familiar, there is a [tension/anxiety/something] that exists that does not exist when i am truly alone. the adjectives are in brackets because i am not even sure if they are the right adjectives at all. i am significantly more at ease when alone, and most definitely more creative. i crave alone-ness all the time.

googling this idea brings me to a wiki page on “being and nothingness” which contained all sorts of interesting bits:

The mere possible presence of another person causes one to look at him/herself as an object, and see his/her world as it appears to the other. This is not done from a specific location outside oneself, it is non-positional. This is a recognition of the subjectivity in others.

and on the idea of what happens when another person is present:

…their world is transformed, and everything exists as an object that partially escapes them. During this time the world comes on to you differently, and you can no longer have a total subjectivity. The world is now his world, a foreign world that no longer comes from you, but from him. The other person is a “threat to the order and arrangement of your whole world…Your world is suddenly haunted by the Other’s values, over which you have no control.”

and:

A man or a woman will always be in a world of other people, who can capture him within their gaze, reducing him to his external materiality. They will take his measure, call him hero, coward, nonentity, fool, etc. And then, at last, they will tote up the balance sheet of his life after his death.

Thus, for Sartre’s Garcin, in No Exit, “hell is other people.”

i don’t have any formal training in philosophy, just the things that come out of my own head and occasional googling. is there anything in particular i should read to get more insight to this issue of mine? is it even related? are there more important pieces to this concept that i haven’t uncovered?