I still don't know what I want to do with my life?

...I mean career wise and I'm 15, I still have 2 years to think about it (I'm a sophomore) but I know they'll go by fast and I'm scared that I don't know what I'll want to do.
I'm trying to make up a lineup of colleges too and I'm so confused as to what to pick.
I always thought of journalism but I'm not as great at it as I thought.
I really love to travel, I like photography, and I'm also pretty good with HTML (I can make stuff with it.)
I know there's jobs out there that have those things based in it.
Could you guys give me some job ideas that involve that criteria?

I'm also really into world history.

anyone can do anything. Never give up. Do journalism be a journalist. So what if your not that great now! Be pissed off say "I will be great I won't stop" To be consious of one's own greatness can be a huge stumbling block causing them not to push themselves hard and then wants confronted with a hurdle that their greatness cannot overcome they are crippled and give up that jump. No matter what never give up. Push yourself. Even if you don't know if you will be good later or like it later. All we can do is make the best decision now that we know we believe in. If it changes later so what.

You are very young so that feeling is normal and healthy.
Try finding some weekend or holidays season job... Maybe your parents or family members can help you finding some opportunity. I'm not talking about "working" I just mean to help someone working. That would open your experience and place some light on the way...
I think most of the people like to travel. So that is a very general stuff. Try finding the specific out of it: you like being with your friends when traveling? taking pictures when traveling? knowing new people? what is that on traveling that really makes the difference?
Ask yourself: what can you do to improve this world and at the same time enjoy doing it?
- For example, I love to take risks and leadership. I love to travel. I'm the manager of a company and I give employment to 5 young persons. I moved out of my country and I built a family where I live now. My employees are satisfied with their jobs and how they are treated there... they have chances to grow personally and professionally. Now they are comfortable and started building their families. I feel like achieving my dreams. This is the way I choose to improve the world: helping others to grow by empowering them on their professional life.

Let me give an idea, no one in the world can suggest for you what YOU want to do with your life,

start with this, go to en.wikipedia.com, and start reading about the real university majors,

read about Photography, Travelling agencies, Computer science, ((( I totally don't recommond Computer science, i will tell why you if you like to)))

meat people that have been their, ask them "What is it like to be a photographer, Travel Agent, IT Engineer, Network Administrator,..??""

Make up question about various jobs out there, what does it take to be in their shoes,..

My advice, study something that will never go out of fashion, "Money",.. Accounting, Finance, Banking, eCommerce, or Maybe, Management and Marketing,..
these kind of jobs will never be outsourced and is always needed, any time any where,...

Good Luck