What Makes a Story Go “Viral’?

Does anyone know?

I’ve been writing on Medium for almost two years. I’ve written 814 stories. I’ve had no goals, no agenda, I just write when I feel like it about my life experiences — mostly travel tales and all true. Sometimes I’ll read someone’s story and that will spark something in my memory that I think I can write about. There’s also been writing prompts and monthly challenges that I enjoy…