Take the worst result into consideration before doing something, so that even if the worst result appears, it is easy to accept. For example, someone cares about you.

Borrow money. If you agree, be prepared for him not to return it.

Treat people equally. Treat him as he treats you. You are very kind, but you are not 250, are you? Use your head more and be on the safe side.

On the premise of protecting yourself, skillfully repair those things that have no conscience.

FYI