Rather than dwelling on ourselves, what are we to do when facing our guilt and shame? How does this work?

Matthew 16:24
24 Then Jesus told his disciples, “If anyone would come after me, let him deny himself and take up his cross and follow me.”

After wasting his inheritance how did the prodigal son describe himself? What was his focus?

Luke 15:17-19
17 But when he came to himself, he said, “How many of my father’s hired servants have more than enough bread, but I perish here with hunger! 18 I will arise and go to my father, and I will say to him, ‘Father, I have sinned against heaven and before you. 19 I am no longer worthy to be called your son. Treat me as one of your hired servants.”’

How did the father see his son? What did he do to show his son that he was still valuable to him?

Luke 15:20-24
20 And he arose and came to his father. But while he was still a long way off, his father saw him and felt compassion, and ran and embraced him and kissed him. 21 And the son said to him, ‘Father, I have sinned against heaven and before you. I am no longer worthy to be called your son.’ 22 But the father said to his servants, ‘Bring quickly the best robe, and put it on him, and put a ring on his hand, and shoes on his feet. 23 And bring the fattened calf and kill it, and let us eat and celebrate. 24 For this my son was dead, and is alive again; he was lost, and is found.’ And they began to celebrate.

How does God see our past when we are forgiven?

Isaiah 1:18
18 “Come now, let us reason together, says the Lord: though your sins are like scarlet, they shall be as white as snow; though they are red like crimson, they shall become like wool.