Arouse doesn't work well there. You need to rouse yourself. You need to galvanize yourself.
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Anonymous Arouse could also mean awaken, right? With that meaning, why can't it be correct?Arouse can mean awaken, but it's not used that way in a context like yours. In the sense of awaken it's not something you do to yourself. GPY's comment, "'arouse yourself' has unfortunate connotations", refers to a