affirmation
af-fir-ma-tion
noun
A positive statement or act asserting something's truth or validity.
"His nod was an affirmation of agreement."
noun
Emotional support or encouragement, often self-directed, for positive change.
"She used daily affirmations to boost confidence."
Thesaurus
Synonyms: assertion, statement, avouchment, avowal
Antonyms: reversal