Imitate poetry in the form of sadness

When I was a child, happiness was a short distance. You are at the table and I am at the table.

Happiness in middle school is a short lesson. You are in this class and I am in that class.

Happiness in high school is a short distance. You are in the back seat and I am in the front seat.

Now happiness is just a short distance between you in a city and me in that city.