Answer:
I think it's more of an opinion based topic so it has to be from you. I think. But a way to do it is to think of someone you'd want to trade lives with (a friend, family member, celebrity, etc.) then think of parts of their life and why you'd want to trade places with them and maybe compare some of the stuff to your life.
Step-by-step explanation:
Example: (This is completely random.) "If I could trade places with someone, it would be Kim Kardashian. I would trade places with Kim Kardashian because she is super pretty. She is one of my idols and I've never been on an actual Yacht but she has and I really wanna experience that like she has. I don't have that much money but she's rich and I would love to have as much money as her. She has great style and I love scrolling through her Instagram looking at all her pictures and outfits. I don't have any siblings but I wish I did like Kim does. Those are some reasons why I'd want to trade place with Kim Kardashian." That wasn't the best example but I hope you get the jist of it. :)