Agreed, breaks can open the window where inspiration flies in. tu could also ask around for ideas, take a walk, paint a little, do another hobby tu enjoy. Don't worry about writers block, everyone gets it, it goes away in time. Just don't panic and tu shall be fine :)
Well, that depends on the writer. Where do tu get your inspiration from? If música helps tu think, try listening to your favorito! song while tu brainstorm. If nature helps tu think, try going for a long walk. Bring a notebook, and write down any ideas that come to you. If art helps tu think, try drawing one of your characters. Getting an appearance of your character in your mind can help tu work out personality and traits. Hope I helped! :)
Write a little short story of something else. tu get some creativity flowing again, tu can use some of the ideas in your short story for your novel, and if this doesn't help tu with the novel, then convert your short story into your new novel.