Answer:
You need to find a memory of your own but, this is an example. You may use it if you would like!
When I was little my mom would not let me use my money on things such as giftcards for game becuase she said it was a waste of money. Now I am thankful she didn't let me because I have money save to use how I want because I am older.
I am now realizing that this is for geography but I have come up with an example for that too. When I was younger I was sad because I wanted the Pangea to be together still but now I am glad it's not because the history that we have today would not be the same.
Hope this helped! :)