This post contains the Golden Rule of how to obtain an internship.
Personally my first step would to be more outgoing and do everything you can to introduce yourself to those who are in the field you are currently thinking bout joining. From my experience when I thought about going to law school, I talked to everyone to get used to it and break out of my shell and spoke to everyone in the legal field. In doing so, I met a big shot corporate attorney that offered to guide me through the process of law school and so on after that. If you follow that advice and break out of your shell you’d be surprised with the things you can accomplish.