"The people that are most disrespected by Allah are those who accuse Him. He who seeks Allah's decision and dissatisfies himself with it when it comes opposite to his will is accusing Allah. Then come those who complain against Allah. They are those who exaggerate in complaining about the misfortunes that they are suffering. Then come those who neglect showing gratitude when they are endowed with a grace and show intolerance when they are inflicted by a problem. The most respected people are those who show gratitude when they are given a grace and treat with their problems tolerantly."
Mola Imam Jaafar e Sadiq (a.s)