The Last Graduate by Naomi Novik
Mum spent a lot of time in my formative years gently reminding me that people don’t think about us nearly as much as we think they do, because they’re all busy worrying what people are thinking about them. I thought that I’d listened to her, but it turned out I hadn’t. Privately I’d believed, on some deep level, that everyone was in fact thinking about me all the time, evaluating me, et cetera, when really they hadn’t been giving me much of a thought at all.