Michael Oher was a homeless teenager, until the Touhy family took him. The helped him with grades and helped him earn a football career. He is now in the NFL and is a very humble man.
No matter where you come from, you can learn to overcome your background. By overcoming your background you can achieve greatness. Always strive for success.
Both stories have sacrifice. In "Leaf" the old man died for the young girl. In Oher's Journey the Touhys sacrificed their home, money, and time for Michael's safety.