I get inspired to write every day by sitting down at my desk and starting to write. I'm sorry, but there it is. I'm a professional writer. I still freelance some, and I earn a living when I'm writing. If I don't write I don't get paid. It's very inspiring, money is.
Sometimes I get inspired by an idea or a picture or a statement, and I write when I wasn't planning to. But my best inspiration is my butt in my chair in the morning.