I know the movie is only loosely based on facts, but the character, P.L. Travers, is haunted by her past. She needs to progress forward, but becomes almost paralyzed with fear. She doesn't want change, but without agreeing to some modification in herself and her work, the world as she knows it will crumble.
The movie comes to an end with P.L. Travers accepting what she needs to do and letting go of the past. "Let it go and not have a life dictated by the past; have forgiveness. Restore order with imagination, instill hope again and again and again."--"Saving Mr. Banks"
"The instillation of hope offers a path back to a sense of possibility in our lives when almost all seemed lost. It’s about relief, restoration, and the chance, once more, to look forward – to wonder, when we’re in a barren place, what might be over the horizon (and to be given the strength and sustenance to keep putting one foot in front of the other in order to find out).
Yet sometimes instilling hope is also about looking backward, too. Looking back to remember how you might have handled situations or problems like this one before. To recall which qualities came to your aid at that time, and to know that you can access those again. For the simple fact of having negotiated tough terrain before can instill the hope that you can do it once more."-- Gabrielle Gawne-Kelnar
Remember your past, use it to reflect on and learn from. Don't fear what's to happen, embrace change and move forward.