The condition of being positive (in all senses); positivism(noun)
The result of being positive.(noun)
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Use "positivity" in a sentence
"Maybe the positivity is starting to sink in already."
"While a third round of quantitative easing could arguably justify some short-term positivity -- especially given the rally after its second iteration -- implied earnings growth in the market suggest bears are in control."
"Founder editor Rob Kall has a 30 year background in biofeedback and self regulation and over 15 years in what he has called positivity and what the American Psychological Association calls Positive Psychology."