Not all anger is sin. In fact, you have the right to be angry about what God is angry about. It is called righteous anger. You have the right to be this way until the sun goes down. You will really need to search your heart to figure out the source of your anger. Whether you bottle up your anger or blow up with your anger, both forms are just as dangerous. You probably already know this, but misguided anger doesn't do any good for you or the people around you. It's time to let God replace your anger with love.