In life, you all say, who in the world should be really good to themselves? Is the one who should care!

The people you should care about are those who are really kind to you and have no malice. We call such people nobles. Of course, it won't be much in a lifetime. As for how to identify, people will look at it for a long time. You can treat it with your heart for a while, and be careful not to tear your heart out. If ta doesn't know how to cherish it, it means that ta is not a noble person. See if ta will apologize to you in the future.