Since we probably can't be above average in everything in life. For example, some people can't really sing, others can't dance, and others don't know how to manage money!
I'm also guessing that it's going to be impossible to be above average in all areas of your life so it's probably best to focus on the areas that you think are the most important.
Everyone likes money. If money wasn't important then people wouldn't work for it. So I think that this is an area that that everyone should focus on. There are so many people out there that dig their heads in the sand when it comes to finances because they just don't want to know how badly they are hurting themselves. Some people don't know how much debt they have, others haven't really looked into saving for their futures. Trust me, years from now you'll want to be one of the people that tied to get ahead of the pack, the earlier you start thinking of these things the happier your future self will be.
According to the U.S. Bureau of Economic Analysis the average American was only saving 5.1% of their disposable income in May of 2015. To me, that doesn't look like a very difficult number to beat. Even if you can't beat that number now, you should strive to beat it in the future.
Here's my advice on what you should strive to be above average at (not a complete list):
Be the best person you can.
Save as much money as you can, later in life you'll be happy you can retire - 20 years from now you probably won't care about that new iPhone or flat screen TV.
Set high goals, but be realistic about it. You probably won't be an astronaut, but you could have a solid job with job security.
You won't get everything you want in life. We can't all have the dream home, new car, latest gadgets. There's a reason they have a term called a "starter home" no one starts off in their dream house. Learn where the trade offs are and be happy with what you have, don't be envious of what you don't.