Have you still no faith?

There are many things I need to improve in my journey to holiness, but one for sure is my ability to surrender my worries and concerns to God with faith and full confidence. This morning I woke up worrying about a situation of a friend. I wonder how the person could get better, I wondered what I could do to help, and I feared what could happen if things don't improve. I pray for this person every day, but in general terms, for this person's well being. 

My wife then came to the room and was telling me a story about how the father of this child that was very ill prayed with full confidence in God's mercy and the child was miraculously healed. Her story hit me like a brick. What am I doing worrying about this person's future? Have I still no faith? Jesus can calm a storm with one command, yet I think I can fix something on my own and don't think of surrendering and asking. I need to surrender this specific concern to God and ask for His mercy and grace in this specific situation. I can't do anything, but He can do it all. If it is His will, and it is what's best then this person will be healed. It's in Jesus' hands. Of course, yesterday's reading just confirmed the revelation.

38 But he was in the stern, asleep on the cushion; and they woke him up and said to him, “Teacher, do you not care that we are perishing?” 39 He woke up and rebuked the wind, and said to the sea, “Peace! Be still!” Then the wind ceased, and there was a dead calm. 40 He said to them, “Why are you afraid? Have you still no faith?” 41 And they were filled with great awe and said to one another, “Who then is this, that even the wind and the sea obey him?”

The Holy Bible: New Revised Standard Version. (1989). (Mk 4:38–41).