10 things that I wish to had learned earlier in life:

1) You're not going to be rich by selling your workforce. Instead, create value for society through a business and own equity on it. (more @naval)

2) Workout 5 days/week is easier than trying to be fit. Find a hobby that burns calories, don't miss it twice. Enjoy. @atosjiujitsuhq

3) Find a reason to be grateful every day is easier than the search for happiness.

4) Great books give you superpowers.