You have an idea of what you want to do. But you do not know where to start or even how to go about it. When there is no one that you can turned to for guidance, the way forward is to throw yourself passionately into the field that you want to pursue. Learn everything you can about it. Attend as many related events as you possibly can. Study the failures and successes of those who have made it in that field. Live and breathe it. Most people would call that extreme, and that is why only a handful succeed in their chosen field. You might not have the connections or beneficial circumstances but as long as you give it your very best in getting acquainted and knowledgeable in that field, you will most likely have a bright and promising future in it.