How will people remember me? How will the people I moved away from remember me? What do people I've lost contact with think of me? Do they? For some reason, it's important for me to know.
It is often said that you should not care about what other people think of you. But I don't think that is true. It's fine and all that you shouldn't base your perception of your own value as a person on the opinions of others. Humans are judgemental, and you need to be able to be proud of yourself without receiving praise or acknowledgement from others. Not everyone knows you, they might be wrong, or simply have a false image of you.
But you should definitely care about what the people who matter to you and those who know you think. Not necessarily about what any one individual will say about you, but the general perception people have of your personality. No one is perfect. If someone has a problem with you, maybe you need to take a step back and think about if, or how, you wronged them. Maybe you didn't, or maybe it's illegitimate critique, but simply considering the possibility can lead to a positive change. Other people will help us improve. People who never hear any legitimate critique, or will not listen to it, will not grow, or develop, as individuals. We will take things to heart, to polish our personalities and become better individuals. The opinions of others are stepping stones, tools we need in order to move forward.
We need to be critical of others, we need to think about the behaviour of others and the ethics behind their actions. And we must take that criticism, and apply it to ourselves. When we do something immoral, it often happens without thought. We might not even realize that what we're doing is wrong. That is why every wrong we see in others we must search for in ourselves. It leads us to both consider what is moral and immoral, and turn an analytical eye upon our own behaviour. Every once in a while, take a moment and think, am I not committing the same mistakes as them? Because we are. We do. We all commit the same mistakes, over and over, and judge each other for the same wrongdoings, over and over. We do it in different ways, but the sins are the same.