Does "Keep positive" in meaning of "be an optimist" works
The context is, when someone was failed in an exam, and I want to encourage him for the second chance that has.
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Sign up to join this communityDoes "Keep positive" in meaning of "be an optimist" works
The context is, when someone was failed in an exam, and I want to encourage him for the second chance that has.
In my opinion, "Stay positive" is a bit more common and natural-sounding than "Keep positive", although the Ngram indicates that might be a relatively recent trend.
As for what the expression means, you can say that as:
or:
but I would avoid:
(In other words, use an article with the noun; otherwise, use the adjectival form of the word.)