"But I can't think of anything to write!"
Famed motivational speaker Earl Nightingale, in his classical audio program Lead The Field, said that he gets up 30 minutes every morning before anyone else and brainstorms ideas. In that 30 minutes of peace and quiet, how many ideas could you think of?
Will all of your ideas be worth the next mega-bestseller? Probably not. And not all of your ideas will even be considered good. But if out of ten or twenty bad ideas comes one spectacular one, then it's all worth it.
Try it tomorrow morning (or evening, if you're more of an evening person). Grab a cup of coffee (or tea or a glass of orange juice). Find a quiet place. Sit. And think. Have a notebook open to a fresh page, and write down every thought that comes to mind. Shoot for twenty ideas. At the end of the week, you'll have one hundred ideas! And, like I said, not all will be worth pursuing. However, if you keep it up, you'll have hundreds of ideas to draw inspiration from and pursue your next project.
Then try it again next week.
Keep it up for the entire month, and you'll have roughly 400 ideas!