Overcoming Writer's Block

Overcoming Writer's Block: "If you've ever had writer's block, you know how frustrating it can be. You look at a blank computer screen and simply can't come up with anything. It can even be like a snowball rolling downhill, getting bigger and bigger. 'I can't come up with a good idea' becomes 'I'll never come up with a good idea again.' What can you do to overcome it?"