We all get it. I get it less often than most, but sometimes it can be chronic. And the more pressure is on me to write, the worse the block gets. So I'm going to pass on this tip.
If you have writer's block on a project, step back and write something else. Even if you have a deadline. And if you do have a deadline, ask for an extension. Make sure that you set reasonable deadlines for yourself, too, so that you're not under the kind of pressure that can create writer's block...or make it worse.
Now. I have to go try and write an article. Mutter. I have idea block on non-fiction right now. Then I have a short story I want to write.