What did Joseph hold on to?

As I was thinking about Joseph and what he went through with being sold as a slave and then put in prison a thought came to my mind as to what it was he held on to... Any person needs some light and some strong images to hold on to in their dark hours. This teenager was away from home and family and everything that had been familiar. He was sold as a slave by his own brothers. He was put in prison for no fault of his. He faced all of it. He never succumbed to self pity, not that we know of. It is not recorded. He persevered. He had a dream. He knew it had to come to pass. The dream was the light in his heart.
But was there more? What about the coat of many colors that his father gave him? What did that mean to this boy? He was a shepherd boy. His mother was no more. His dad loved him more than anyone else in the family. His brothers were jealous of that. And the attention he had from his father. He might have resembled his mother Rachel. There is no reference to that, we can only assume. What did his father tell him during the long cool desert nights?
Jacob his father had some stories to share I am sure.... Jacob had had a journey. He was a little lost in character and went through some stuff. He ran away from home and found himself in his uncle's village and farm. He worked for years to marry the girl of his dreams. Rachel became his obsession and single purpose. He worked hard. He couldn't cheat. No one was coming to his rescue like his mother had done time and again. He had to wait to marry Rachel. He had been a cheat. But now he was being cheated on. By his uncle. He learnt to give in once, but the next time he wisened up. He knew better. He made a deal and counted on God to see him through. He had wisdom and God was on his side. He came back to town and rich man. But he was still afraid of what he had left behind. His brother was still in town. He needed strength. He wrestled God. He found himself, saw himself and realized he needed more of God. God named him Israel.
Rachel was the love of his life. Everything he had and wanted was complete in her. She died during childbirth. The second son she bore was Benjamin.
Now Jacob had no one left to love like he did Rachel. He poured it out all on Joseph. Joseph was wise and strong and handsome. Jacob told him all the stories. The promises of God. The undeserved grace that was available to people who trusted in God. The stories about his great grandfather Abraham and what God had promised him, and to look at the stars. Stories about Isaac his grandfather. Jacob must have told Joseph how much he loved him time and again. Jacob gave Joseph the coat of many colors to show his love for Joseph and what he meant to him.
As a slave, far away from the warmth of his fathers love and family's protection, Joseph remembered these stories. He remembered God's promises. He remembered God always comes through. That is what he held on to. His father's words and his Heavenly father's promises. They were not in vain and his faith was not in vain. It came full circle. He was reunited with his father and brothers. He lived with his father a long time in prosperity. He forgave his brothers. He was ruler over them all. He was second in command only to Pharoah, the most powerful man on the planet at that day and age.