Good Character

Delaying in correcting someone when they commit an evil

Q: If it is permissible to delay denouncing evil (النهي عن المنكر) for a good reason, then if I see someone cursing, for example, if I advise him and he curses and he does not respond, and I say I will delay the advice until he calms down, but he calms down and I did not advise him, and two days passed, should I advise him after two days or is the obligation waived? And why is it waived when it is a debt?

Dealing with people who tarnish your image

Q: How to deal with people who lie about you, tarnish your image, hurt you and deprived you of your basic rights. They constantly taunt you and pick faults in you? How to stay firm in faith when you see a liar and deceptive people to be successful in life while truthful and honest ones suffer? 

Is continuously praising oneself and thinking low of others permissible in Islam?