We all get those days where we get stuck on our ideas and it seems impossible to get those creative juices flowing again. It is extremely frustrating to find yourself in this mental space. Sometimes it helps to just walk away, take a break, go for a walk, or do something entirely different. Or just try picking up a pen and doodling without thinking. Let whatever comes to mind come out onto paper (or whatever medium). Sometimes, what you produce is better than what was expected!
“To live a creative life we must lose our fear of being wrong” -Joseph C Pearce