Everyone has his own shortcomings. It is a good thing that you are willing to correct your shortcomings and reflect on yourself. Not everyone is like you, and some people don't want you to mention his shortcomings. He will think that you are deliberately laughing at him and making him look bad. Maybe some people will accept other people's advice and correct their own shortcomings, but it will be easier if they realize this at the right time. Now people, if you ask them to correct their shortcomings, they will think that you are lofty, and it is better to do more than one thing. Be yourself and make friends with like-minded people. You can mention a sincere friend and ask him to correct his shortcomings, and he will think you are good to him.