When your mind keeps going to the worst case

“But immediately Jesus spoke to them, saying, “Cheer up! It is I! Don’t be afraid.” Peter answered him and said, “Lord, if it is you, command me to come to you on the waters.” He said, “Come!” Peter stepped down from the boat and walked on the waters to come to Jesus. But when he saw that the wind was strong, he was afraid, and beginning to sink, he cried out, saying, “Lord, save me!” Immediately Jesus stretched out his hand, took hold of him, and said to him, “You of little faith, why did you doubt?””

Matthew 14:27–31

“A big wind storm arose, and the waves beat into the boat, so much that the boat was already filled. He himself was in the stern, asleep on the cushion; and they woke him up and asked him, “Teacher, don’t you care that we are dying?” He awoke and rebuked the wind, and said to the sea, “Peace! Be still!” The wind ceased and there was a great calm. He said to them, “Why are you so afraid? How is it that you have no faith?””

Mark 4:37–40