choose a career

So I’ve been studying Publishing/Journalism for 3 years now, next is my last. I’ve just finished a wonderful placement but I’ve always been unsure as to whether or not this is what I want to do. Sitting at a desk designing brochures for companies is not my idea of fun! However I have always been interested in doing Primary Teaching, I’m thinking of doing a post-grad in this, yet again though I have no idea if this is for me.
1st step: get some experience working with kids!