One thing I like to do is make outlines for the chapter before I write it. I structure my scenes using vignettes. For example:
That way, if I get stuck on a certain spot, I know where I need to end up and can write my dialogue towards that point, or I can write backwards from that point and connect the dots with a bit of editing.
Also, it’s good to step away from your story and take a break. That’s usually when the inspiration hits me. It’s especially helpful to watch T.V., read a book, or otherwise engage in another story. You might just come up with the solution you need by taking inspiration from other media.