The "nobody is thinking about you" advice is usually wrong.
A common piece of advice is that "nobody is paying attention to you" or "everyone is too busy worrying about themselves to think about you." but in my experience, that's not really true.
People notice things. They remember things. They talk about things. They form opinions. They tell stories about what happened and who people are. Sometimes those stories stick for years.
People absolutely remember embarrassing moments, hold grudges, gossip, make assumptions, and form long-term opinions about others all the time. A lot of the time they're based on incomplete information, assumptions, or a handful of interactions, but they still exist. They might not think about you constantly, but they often think about you a lot more than the popular advice suggests. #conversation source