You hear a lot about writing letters to your younger self or older self. It’s an interesting concept, but quite frankly I don’t know how much good it does. If you write a letter to your younger self it’s not going to make a bit of difference because that self and so many years ahead of it is now in the past and there’s nothing anyone can do about it. If you write a letter to your older self it might be interesting to read when you get older, if you can find the letter those many years after writing it, and if it hasn’t been thrown away as drivel.
But like I said, it’s an interesting concept and perhaps the exercise helps with, I don’t know, something.
Recently I was introduced to a video that is just about the coolest thing I’ve seen in a really long time. This guy, at age eighteen, filmed himself asking questions to his older self. Nearly forty years later he filmed the answers as his older self and edited it all to be one man’s interview with himself. I don’t know why I think this is so much better than writing letters; maybe the visual quality makes the “interview” seem more valid and worthwhile.
Check this out – it’s only about four minutes long and will give you a smile if nothing else.
Auntie B's Wax 
I love this!
That’s so cool! I never wrote a letter to my older self, but I did write a letter to John before he was born telling him about my life (at age 22!) and what my hopes and dreams for his life were. I gave it to him when he was 22. It was a wonderful experience peerng back into our pasts with him. I wish I had done a video letter, or journal, back then like this fellow did! Maybe I’ll do one now,
Sara I absolutely loved this! So very cool and funny. I did write myself two letters One to open when I was 35 and one to open when I was 40. So many things happened in my life that changed me and I could see this evolution with each letter. It was fun to see the young clueless me and then the older wiser me. A work in progress still.