We are free, but at the same time we are not free if that makes sense. For instance I have the ability to break the law or disobey my parents, but I choose not to, as I believe that is the wiser choice. But there are restrictions in my life. I bet I could never do every single possible thing there is to do (every job, every activity and so on) and even if I could, I would be unable to enjoy each one of them. So here's your restrictions and there is your freedom.