My advice, take a good look at what you enjoy doing and what you're interested in. Future money is a factor, but don't make it the the highest priority. If you like what you're doing, the money will come by itself. Don't lie to yourself when it comes to assessing your strengths and weaknesses. For example, if you don't like math and physics, then don't go into engineering thinking that it'll work out. It won't, because it'll only become less enjoyable as the material becomes more difficult. Hobbies are a good place to start, but remember working on cars is nothing like training to design one.
If you can, visit the campus. If you like the school, you'll be motivated to go to class. If you can visit during a school day, that's even better. If you can, talk to an advisor. Flip through the course catalog. Don't forget there's life outside of school also, so check out the local area.
I'm starting my fourth year at UT Austin. I wasted two years trying to do something that I didn't really enjoy (EE), and my GPA suffered as a result. It's way easier to break a GPA than to rebuild one, and I'm only now getting back on my feet, doing something I'm genuinely interested in (economics/finance). Hopefully this will be helpful to you, good luck!
