Dear 16 year old me,
I'm not going to say do anything different, because I know you rarely follow advice from anyone, especially yourself, so I'm not even going to try. There's a few important things to learn though:
1) Bad Things happen - the whole world isn't out to get you, no matter how much you may think it. Just relax a bit more through the bad, and you'll make it out reasonably intact at the other end. Afterall, there have been a lot of good changes that have come out of some of those changes.
2) Don't be afraid to be you - I'm not going to tell you what's coming up, but it's all through free choice, and it's always going to be fun.
If you are open to suggestions for things to do, pick up the arts sooner. You read stupid amounts already, so start writing. You listen to music so much already learn about DJing as soon as possible. You've got an eye for artwork, so go grab a camera. Even if you don't start on those now, it's only a matter of time before you'll be doing them.
Anyway, I'm going to wrap this up now - but just one more little note. When they ask if you want to move up north, say yes - there's something wonderfully important up there....
Me, aged 34