Major is social work, sociology, psychology, counseling, or human services. Begin volunteering or getting some hands on experience working with populations or areas that interest you (i.e. older adults, young children, adults with addiction, juvenile justice, etc.) Talk with those you interact with who are working in the field and ask them about their work, education, career choice, etc.
Having both sides, education & hands-on experience, will be a good way to direct and guide your education so you can work with your college counselor or major advisor to pursue your education and career interest.
Hope this helps,