I'm A Big Kid Now

I'm still trying to figure out what I want to be when I grow up. It's the biggest stumbling block in my life right now. I feel like I'm over-qualified with zero passion for one specific area of interest. I tell people this and they ask, "Well, what do you like?" Here you have it:

• Writing
• Graphic design
• People
• Nutrition
• Exercise
• Social networking
• Relationships
• This
• And
• That
• And
• A
• Whole
• Lot
• Of
• Everything

My family's home teachers were home teaching a week ago or something, and one of them suggested I take a vocational test? Do those even work? Considering the list above, what should I do professionally?