Personally, I don’t fight it. If I can’t bring myself to touch something, I do something else for a while. For literal writer’s block, I might spend some time on code or art for parts that are written…or I might pick up a side project for a day or two and come back with fresh ideas.
Forcing yourself to work on a particular creative project can lead to burnout, so I prefer to wait until I’m ready to get back to it. Of course, I have the benefit of my creative projects being a hobby so it’s a lot easier to take breaks.