Those who believe in Allah and accept His decree are always cheerful and joyful. It also shows up in their daily lives and is the fundamental source of their character. For believers, there is no source of material or spiritual discomfort because their love and devotion to Allah, and their submission to Him, remove any cause for material or spiritual discomfort. As a result of the guidance of the Qur'an, they are aware that Allah will turn "bad" things to their advantages and benefits. Because of their faith, believers always have cheerfulness and joy. They remain cheerful even in an environment where everyone else is unhappy or pessimistic because nothing can make them unhappy.