Hello! There are several options for you in this field. Here are just a few:
1) Private practice - provide therapy for individuals in your community. This provides you flexibility in your schedule, ability to set your own rates and to be your own boss. Therapists can also do niche work, such as psychological and educational testing. There are a lot of options here.
2) Work for a company - some companies hire Psychologists to help them solve problems in their business. Many work on teams to develop surveys, care for employee concerns on a large scale. Less flexibility over your schedule as you would be working normal business hours.
3) Some Psychologists also become Professors at Universities or Colleges.
4) Work for community organizations, hospitals, etc. There is a lot of work for Psychologists to be in practices who serve the community.
Once you get into school you will understand a lot more about what types of roles exist and will gain experience to understand what you like the most as well to help taper your interests. Good luck!
I second Karin's response!
For specific data check out the American Psychological Association's interactive data tool - Careers in Psychology. It provides data on where psychology graduates work (primary work activity, sectors, etc.) based on degree level (Bachelors, Masters, and Doctorate).