Once you start recognizing the truth of your story, finish the story. It happened but you're still here, you're still capable, powerful, you're not your circumstance. It happened and you made it through. You're still fully equipped with every single tool you need to fulfill your purpose.
At that moment, Harry fully understood for the first time why people said Dumbledore was the only wizard Voldemort had ever feared. The look upon Dumbledore's face as he stared down at the unconscious form of Mad-Eye moody was more terrible than Harry could have ever imagined. There was no benign smile upon Dumbledore's face, no twinkle in the eyes behind the spectacles. There was cold fury in every line of the ancient face; a sense of power radiated from Dumbledore as though he were giving off burning heat.