He didn't do what he should have done. In guilt, he went off and wept. We can all probably think up dozens of times when we've felt guilty for something we've done or should have done. Like Jonah and Peter, we are called to turn to God when we feel guilt and sorry. But increasingly, it seems there's a growing percentage of the population which doesn't think in terms of guilt.
Shame seems to be a stronger influence.
Shame Shame is very different than guilt. With shame, an individual feels his very core, his very being is wrong. No matter what he does, he will never be part of community. He then becomes an outcast. Being put to shame was lethal.