Sometimes, sitting back and doing nothing is the best way to get back at a bully or other tormentor who wants to get a rise out of you. By constantly going after them, hurling your own insults and spraying your anger back, they continue to hold the upper hand over you and prove that you got what you deserved. By ignoring them and cutting that person out of your life, they're dead to you. It's over and you can forget them. Being ignored can be just as frustrating, if not more, than being taken advantage of. This technique works especially well for people who seek to embarrass you in front of others, like siblings, bullies at school, or coworkers who make jokes at your expense. Don't let them boss you around. "The best revenge is living well." Act as if whatever happened that provoked your revenge affected you in no way. Put up barriers and get on with things as you always do. Even if you're stuck in a jam because of what someone has done to you, hold your head up high and don't let them see how it has hurt you. The sweetest revenge can be getting on with your life and living a better one than the person who inflicted pain on you. If you have to see the person on a regular basis, plan out great stories to tell about yourself to illustrate how well you're doing, how great your life is. If someone embarrassed you at work or school, talk about your great weekend out on the town with your huge crew of interesting friends, or the cool bike trip you took. If someone bullies you on Facebook, or constantly bombards you with irritating Tweets or Instagram photos, don't let it remain a part of your life. Unfriend them, unfollow them, and block them. You can even report them if their actions violate the site's policies. Don't let silly minor irritations become big sources of conflict. Before long, the memory of their irritating humble brags and conspicuous photos of them with your ex will fade into a distant memory. It can be tempting to get into a mud-slinging contest online, trading wall posts and having chat-style...

TL;DR in Vietnamese:
Phớt lờ người đó. Tiếp tục cuộc sống của bản thân. Chặn người đó trên mạng xã hội. Không giúp đỡ người đó khi họ cần.