If you could give any general advice to the 16 year old version of yourself, what would it be?
This is for us older types, if you are 22 just ignore this; you can speak directly to the 16 year old you. Most of us have some things we wish we could change (congratulations to all of you who don't, you too can just move along). If you could be like Biff in Back to the Future and talk to the 16 year old version of yourself, what would you say?
Now, this would be general advice, like "don't spend every cent you make, try to save some", rather than "Buy Apple stock when it hits 17 and don't sell!"