Doesn't that remind you of the ending of The Wizard Of Oz, where Dorothy is told that the power to return home was with her all along?
"All the ogres and secret helpers of our nursery are there, all the magic of childhood. And more important, all the life-potentialities that we never managed to bring to adult realization, those other portions of ourself, are there; for such golden seeds do not die." (Hero With a Thousand Faces)
There's also a children's book, based on Hindu mythology, that perfectly illustrates this idea. It's about Hanuman the monkey whose childhood powers got him into trouble, so the elders asked that he be made to forget them. As an adult he goes on a dangerous adventure to help Prince Rama, and saves the day because he's reminded that he can jump super far, grow to the size of a giant, and fly.
I wonder what "golden seeds" we might still have in us, that only a dangerous adventure will reveal? Hmm.
ADDED READINGLONGER SUMMARY OF HANUMAN BY ERIK JENDRESEN AND JOSHUA M GREENE
One day Prince Rama's wife Sita was kidnapped by the baddie Ravana--or He Who Made the Universe Scream--so Rama turned to Hanuman to help him. As the search parties spread out, Rama told Hanuman: You can do more than you know.
Hanuman's party came to Ravana's island, but it was far away over an ocean--monkeys can't jump quite that far, so Hanuman wasn't sure what to do. But his friend Jambavan reminded him of what Rama said, and that he'd broken his chin jumping to the sun. And Hanuman remembered. And he jumped.
But Ravana's son unleashed a weapon that killed everyone else including Rama. The dying Jambavan told Hanuman: You must use your power to fly to the mountain Himavan and bring back the herb that restores life. So Hanuman flew away and, not knowing which was the right herb, flew back with the mountain.
Hanuman thanked Rama for helping him. Rama said: "All of these gifts you were given long ago. You have followed your heart and found these gifts inside of you. All that I can do is make you the keeper of our story. Tell the world what a monkey who follows his heart can do." Hanuman asked for a reminder, so Rama said he'd give him a daily reminder and made the sun rise. And Hanuman realized this was Vishnu, come to earth in human form.
Then he returned home to tell his story.