Authors Note: Ponyboy is my favorite character, and he is a dynamic character, so I got the idea there to write this piece.
Imagine yourself in this scenario; your friend had just murdered someone, and you're running from the cops. Of course, this is no surprise to the public society. Through time and thoughts, you've worked to become a better person, by doing good deeds and supporting others. These are the events that happened to Ponyboy Curtis all occurring in the time period of a few days.
To get the ball rolling, Ponyboy is a greaser, one of the two gangs that don't get along very well. He is looked at by society as the bad guy who robs places, gets in fights and does bad things. He also has family troubles, and it seems as though he doesn't try very hard to fix them right away. Things got even worse when his parents died. Darry had to quit everything to get a job to raise money for the three of them. Things just don't go well and it makes Pony look like a bad person.
Quite unexpectedly, Ponyboy starts doing things that change him. Hanging out with soc girls, his friend Johnny actually killing a soc, running away from his life and family.. He realizes this is no way to live. He works on living a better life. One day, a church happens to catch on fire, and the innocent children on the inside are in need of help. Johnny and Ponyboy decide to be heroes, and do something they've never done before; risk their lives for someone they don't know. Ponyboy comes out slightly injured, but mostly alright, but Johnny comes out half dead. It made everyone think differently about him, how he acted and what he was like. They looked at greasers differently, as people who care for others.
After the event of Johnny unable to maintain life and Dally's suicide, Ponyboy realizes there's a lot more to life than just having the gang. He realizes it's good to be kind to others, and there's no need to fight. After his talk with Randy, he realizes that socs aren't all that bad, and life isn't always perfect for them like he thought.
Ponyboy became a better person, and all it took was some eye-opening. It's possible for people to change, and in this story, Ponyboy clearly proves it to be true. Don't think things are impossible. The word itself says "I'm Possible!" This states why Ponyboy is a dynamic character.