What is the hardest thing you've ever done?

The hardest thing i ever done was a week hike in the woods. This took place during my first year at my old school (St. Benedict's). We had to travel in the woods in the week in northern New Jersey.
It was a requirement for us to become members of our school since we were freshmen. They called it the trail. We had to hike in the mountain for a week with no shower, no phones, no nothing. It was basically taking us our environment to see if we were going o survive. Doing the trail i will expose to different animals. different things that i wouldn't have experience in the suburbs. Trailing up mountains and hiking near cliffs was pretty scary to me because I was afraid of heights. It was a hard experience but also a fun one at the same time. And that was the hardest thing i ever done.