One thing I did learn is that there are far more problems in many other countries than there are in Britain - like slavery, children becoming soldiers and extreme poverty.
I got to interview some of the young delegates from Malawi, Kenya and Serbia. They were very confident that they were being listened to.
Overall, I had a fantastic time and I'm going to keep checking to see how the governments progress with their plans - I really hope they keep the promises they made in New York."
Harry, 15, Northamptonshire
Do YOU want to write a Press Pack report? It can be about ANYTHING that's happened to you - or your views on the news.
Click on the link top right to find out how!