‎السلام عليكم ورحمة الله وبركاته How do i stop being coward? I am terrified of falling into harm and failure

Put your reliance on Allah, and know that benefit and harm are in His Hand alone, and that what has reached you was never going to miss you, and what missed you was never going to reach you. Then take the lawful means, for Imam Ibn Baz raḥimahullāh explained that true reliance on Allah is to depend on Him while also taking the means He commanded, not abandoning them. Make much du'a and turn to Allah to strengthen your heart, and rectify yourself by doing what He commanded and leaving what He forbade, and courage will come to you by His tawfīq, in shā' Allah.