Ill say it again - it is a tough career path to take - but NOT impossible by any means. If you're in college get involved in any film clubs or acting clubs there might be, anything in the arts that you can be apart of and gain experience - do it. It's also about who you know, make connections, network when the opportunity comes up. Networking and experience will be the absolute biggest tool you can have in it.
From my personal experience working for a Public Relations firm in the heart of Hollywood, you cannot come in with just a desire to be involved in the films and have fun with it. It takes a lot of passion and desire, and knowledge. Study not only the history of film, but old films and actors and actresses who have made a dent in the industry from the beginning, not just someone currently famous.
Nothing is out of reach, but take some time and prepare yourself, have patience, and get involved!