As others have said, it's really what interests you more. There are videos on YouTube and books you can read about both. I'm studying sociology right now and I love it - it's mostly about the wider social forces that causes people to act how they do, whereas I see psychology as more of a science looking at the brain of individuals. Try to find content out there that explains concepts in both and see what you like more; if you can, talk to teachers about the subject and content as I'm sure they'll be a big help too.