Our buddy Jeffrey Yamaguchi over at 52 Projects has some great writing advice, posted last week. Check out Jumpstarting Your Writing Projects and Weblog Watch.
Instead of grabbing fast food or an overpriced sandwich and then bringing it back to your desk to scarf it down while you surf the web, make a point of getting some writing done during your lunch break at work. Find a nice cafe or place where you can sit at a table (free from emails, phone calls and co-worker banter) and simply knock out a page or two of writing on your laptop or in a notebook.
Read constantly. Fiction, non-fiction, and the occasional book on writing, such as Writing Down the Bones by Natalie Goldberg, Bird by Bird by Anne Lamott, 78 Reasons Why Your Book May Never Be Published and 14 Reasons Why It Just Might by Path Walsh, and Burning Down the House: Essays on Fiction by Charles Baxter.