What action should I take? I went to a poor country and saw how the people live there now I feel really bad and guilty.
What about their living conditions influenced your feelings?
The poverty forces me to be more appreciative about the things I already have in my life.
Many people in the world have less than we do, it's good to travel the world and explore new places to gain perspective. If you never broadened your horizons you would remain ignorant.
You need to learn some geography. The country where I went to has over 100 billion dollars in the bank.
Although a country's government may have money, it does not reflect the amount of money individual citizens have. It's great that you were able to explore another country and see how other people live.