The state or quality of being confident in oneself.(noun)
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Use "self-assurance" in a sentence
"But for girls who lack that armor of self-assurance, the insecurity I felt after reading Seventeen must have been even more unbearable."
"Chilling and ultimately heart-stopping, Alone in the Crowd presents Espinosa as we have never seen him before, the man of detached expertise and calm self-assurance entangled in a mystery where reason alone will not suffice."
"There are too just too many tangential stories that aren't central to the protagonist's long journey to acceptance, stardom, and self-assurance that get in the way of the actor's self-reflective moments."