Ah man I love this. I've been writing one to myself once a year through futureme.org for a couple years now. It always completely blindsides me because I'll have long forgotten about it. I usually write about what's been going on my life, how I've been feeling, what I've been thinking about, etc. I love getting it cuz it always makes me take some time to reflect on how much my life changes in a year. The things I usually write seem pretty similar to your letter to yourself, refugee. I'm glad you shared it - I hope more people can have as neat of an experience as I've had with it.
Sometimes I hate it and sometimes i love it, it's really been interesting. Sometimes I'm like "oh here's this condescending letter from me again, remember all those goals you had that you never did anything about HAHAHA?" and sometimes it can be really touching.