Ahh, you raised a good point. I guess the distinction is that you need to care about the positive side and take that and enjoy it, but not care about the negative feedback that you receive. There will also be times where you, and I am guilty of this as well, will feel criticized by others or perceived negatively by them, when in fact they think positively about your or don't really care.
Good point - yes I would take the positive stuff and enjoy that (don't let it go to your head though), but let the negative stuff go.
The other thing you said is to "get people to like me" which is not a good way of thinking about it. Other people like you because they like who you are. Don't try to get people to like you because you will find yourself doing things that you don't like in order to "get" people to like you. Just be yourself, treat others with respect, and let other people like you.
Good point raised! Hope this helps!