In this excerpt from A Christmas Carol by Charles Dickens which lines show that Scrooge is becoming aware of his own unfeeling attitude and behavior?

This can be seen in a number of places as he develops. IN the fist instance when accompanying the Ghost of Christmas Past Scrooge i watching the past history when he was an apprentice to "old Fezziwig". Scrooge makes a comment having witnessed the use of just a few pounds to make so may people feel appreciated and happy at the time of year and wishes he could speak with his clerk Bob Cratchit