A future postgraduate course

I find it very difficult to think of a postgraduate course, since I would not know which topic to choose. I would like to study many subjects. However, if now in the second year of my career I was asked what graduate degree I would take, it would be about Public Policy (although I'm not sure).

The postgraduate course in Public Policies has duration of two years and has a study plan specialized in the design and implementation of public policies. His areas of study are economics, ethics, research, project evaluation and obviously, public policies. His subjects are very varied.  

The truth is that I don't have a very concrete idea of ​​why to study this postgraduate course. But I think that public policies and everything that has to do with them is too important for our career. Its design, implementation and evaluation are keys to solve any public problem.  

I would love to study this postgraduate course in another country. I believe that having studies abroad and the opportunity to learn another language is an advantage to compete in the world of work. It would be perfect to study and work in another country at the same time. Meet new places, acquire new knowledge and maybe learn new languages. The perfect life of a public administrator (or maybe not).