I don't think of the past. The only thing that matters is the everlasting present.

She didn't look back as she took each painful step up the trail. She pictured the mountain crumbling behind her: each footfall leaving nothingness after it, the dirt and fragile flowers and gritty rocks falling into a hungry abyss. Not possible, she knew, but she also knew that if she ever looked back, she would never make it to the top.