When you are blocked, the best way to beat that is simply to sit down and write. It often feels impossible, or that only garbage will come out, until you actually start. The words usually start flowing. And even if they are garbage, that's better than nothing. Everything can be fixed in the rewrite... except for a blank page. And anyway, once you expel the junk, the good stuff tends to flow right after. If all that doesn't work, go for a walk. Leave the smartphone at home. Let the mind wander. I'm convinced that boredom is a crucial part in the creative process. I get most of my ideas when I'm stuck somewhere, on a bus gazing out a window, delayed in an airport. When you're bored your mind can go off on interesting tangents, which can help unblock you creatively. And if all THAT doesn't work, try refilling your creative well by reading a great book, or watching a great movie, or doing something else to feed your cultural side. Honestly though, boredom is key. Embrace boredom!