The fish obeyed. The sinners in Nineveh obeyed. The Gourd obeyed. The worm obeyed. Of all of God's creation, professed Christians seem to have the roughest time following God's will.
Every storm provides an opportunity for growth.
Jonah grew stronger because of his experience. Storms also come to test us. There is a difference between testing and trials. Testing comes from God to cause the Christian to stand. Trials come from Satan to cause the Christian to stumble.