There's only one way to interpret Jonah's behavior. We're not sure exactly why Jonah didn't want to go to Ninevah. Regardless, it boils down to the fact that Jonah didn't want to do what God told him to do, and he ran away to avoid doing it. The story of Jonah teaches us that God's mercy is greater than our sin, and there are simply some things our sin cannot change. It is God's nature to give a second chance.
Nothing can change that.
He forgives and lets you try again. Your boss may not give you a second chance, your coach may not give you a second chance, your spouse may not give you a second chance, but God will he is the God of the second chance. His mercy is greater than our sin. We tend to think in human terms. We make the mistake of thinking that once we have blown it, we can never get back on track God can never use us again.