If I could write a letter to the future me, I would say: Auuuu! Learn English and you will be happy.
You will go all over the world, will have a very interesting job and friends from all over the world.
I would say don’t buy this gold dress for a graduation party XD
Don’t listen to parents about your profession. Study what you like!
Don’t say goodbye to Sergey. He is a good guy =)
More travel!
Don’t refuse to buy a car, because you will buy it in 27 and this is not a fact XD
So, you are a clever girl and you can do anything.
And don’t forget — Learn English!