Psychologists once experimented on people’s decision-making ability. They divided a class of high school students into two groups. A group practiced soft music in their music lesson; the other group practiced pop songs with rock and roll rhythms. After the lesson, the psychologist took out some articles with problematic logical arguments for the students to analyze. As a result, the students who practiced soft music could quickly find the problem, but those who practiced exciting music could only find the words dancing in the articles. The experiment pointed out that anger and excitement usually make people lose their judgment, cannot see the facts clearly, and cannot distinguish between good and bad. When we are angry, the Bible advises, “In your anger, do not sin. Do not let the sun go down while you are still angry; do not give the devil a foothold.－ Ephesians 4:26-27.” The verse reminds us that anger cannot display our righteousness, but only allows the devil to accuse us. It is suggested that we do not do three things when we are full of anger: do not speak to avoid saying harsh words that will hurt others and ourselves; do not send electronic messages to avoid making everyone think we are stupid; and do not make major decisions to avoid regretting it.