There are several basic ways to identify how good others are to you. First, in the process of getting along with him, you can find out whether he has bad ideas for you. If he wants you to do something that is not suitable for you now, or knows that this kind of thing will have bad effects and results after you do it, and he still advises you to do it, then he must have bad ideas for you. This kind of person is easy to distinguish, because his malice towards you has been shown in specific things. As for the people who are good to you, they will let you improve and enrich yourself, or hope you do what is good for you.
I remember when I was in college, one of my classmates advised me to take all kinds of certificates. He said it would be good for my future work and extra points. I didn't like textual research at that time, because that kind of study took me a long time, but after his repeated persuasion, I decided to take some certificates. Sure enough, these certificates are of great benefit when I evaluate them now, and they can be used as promotion capital when I graduate in the future.
The second is that it seems to be good for you, but it doesn't really want to think about you secretly, but it paralyzes you on the surface and drives you out of the abyss. This kind of person is actually more dangerous than the first kind, because the first kind of person appears on the surface, you can avoid him or take precautions, while the second kind of person will get in his way if he is not careful. So consider what he thinks of you and what people around him think of him.
Because if it is the kind of person who really thinks about you, he must have a good idea about you. He always thinks of you in the process of getting along with him. If he doesn't think so in his heart, he will definitely expose his thoughts at some time or some time. In addition, if people around you say that she is not a good person and has bad ideas about you, then you must also listen to it. Although you can't judge it completely, it can be used as a reference.
Third, I actually think we should start from ourselves. If we all treat others sincerely and have a kind heart, then I don't think others will deliberately provoke you. After all, what people do is based on interests. If you are nice to him, he doesn't have to take it out on you. Kindness and good or bad are relative. If you are kind to others, others will be kind to you, so what can really tell whether others are good or bad is inner kindness.
If we can really be kind to ourselves, I think we don't even have to distinguish whether others are good or bad to you, because at that time, the real world maintained a kind of kindness to you.