Joseph would have had plenty of reasons to say that God's way was not working very well.  However, he continued to live a life of obedience and faith in that face of hardship and God ultimately revealed his plan to save Joseph's family and many others through his suffering.  God wants us enough to allow suffering to bring us into deeper relationship with him.  Although Joseph was obedient and God used him significantly, it was Judah, Joseph's brother with the sordid past, that God chose to be the ancestor of Jesus.  Our shame is real but God's plans are not thwarted.