You need both time alone to work, and time with other people. There's also something to be said for doing both at once. My term for that is ambient sociability

You need both time alone to work, and time with other people. There's also something to be said for doing both at once. My term for that is ambient sociability: Sit in the corner of the coffeeshop or the library, where there are people around, but not too noisy, and none of them focused on you, and none of them likely to disturb you.