When you encounter injustice, curse at him; whether he changes or not is his business, but whether you curse or not is my business. As long as you're alive, you need to have some temper; you can't swallow all the grievances. But after cursing, just let it go; don't trap yourself for a lifetime in bad people and bad things. Never forget to improve yourself, because as you become stronger, you'll realize that many people who once made you angry no longer even have the right to make you mad.