Write of what you know best, often that's personal experience/perspectives in one respect or another. That kinda stuff writes itself and is instantly relatable to at least some of the population. Once you get rolling the ideas tend to flow. At least I have always found, when you write with your heart the words flow.
There anything you can pull from your english lit major at uni? Experiences in directing maybe?
There are resources to organize and focus your writing that may be helpful in choosing a direction and developing structure.