I Need Me Some Focus!

I've been feeling like I'm running without a lot of focus right now. I have many interests and my interests are constantly shifting from one thing to another. It is exciting to learn new things but I never actually complete anything because I lose interest or move on to something else; which, according to the 10,000 hour study highlighted in Malcolm Gladwell's book Outliers, means I'll never become very polished at anything.

I even get distracted when I start thinking about what I can do to be more productive and focused. Any tips?