Write a story about a countdown. What are you counting down to? Is it a countdown to the last day of school? Maybe it’s a countdown to when an alien ship will reach the earth or maybe a countdown to when the mysterious virus has affected everyone around you will get you too. Maybe this countdown forces you to fight and find a cure.
The “ticking clock” in stories helps to add tension. Think about Trish in Divergent. She only had a limited amount of time to succeed and if she failed she would be factionless. The novel Life as We Knew it also had a countdown as an asteroid traveling towards the moon would cause devastation on the Earth.