1, hold your bottom line
First of all, we must have our own principles and bottom line. Keeping a low profile doesn't mean we've lost the bottom line. It is also difficult to communicate with friends who have no bottom line, because if friends don't know what your bottom line is, they may constantly test your bottom line. If your friend has a good temper, that makes sense. However, if your friends are unprincipled, it is likely to destroy your feelings.
Don't pry into other people's privacy
Generally speaking, a person who likes to show off, from a psychological point of view, lacks what he wants to show off in his heart, so it is likely that the more he shows off, the more empty his heart becomes. Therefore, I advise you not to pry into other people's privacy at will, even if you have seen that he is showing off what he doesn't have, don't deny him easily on the surface, because if you deny him, he will think you are particularly hateful.
3. Maintain respect for each other
If you still recognize him as a friend, then I suggest you always respect each other under any circumstances, because if you don't respect him subconsciously, you will disagree with him on some things sooner or later, so this is a potential safety hazard in communication. Only by maintaining our inner respect for each other can our feelings become stronger and stronger.