Noun
freedom from doubt; belief in yourself and your abilities
Source: WordNetself assurance
It may indeed be true that in order to act we need a certain amount of self-confidence and intellectual self-assurance. It may also be true that the very form of expression, in which we clothe our thoughts, tends to impose upon them an absolute tone. Karl Mannheim
The feeling of self-assurance derived from physical achievement always transfers itself to the mental sphere. Stefan Zweig
The most important characteristic that has allowed me to succeed is confidence. I have always been comfortable in my own skin, and even when I was just starting out in my career, had the strength and self-assurance to ask tough questions and push for answers. Heather Bresch
Confidence and empowerment are cousins in my opinion. Empowerment comes from within and typically it's stemmed and fostered by self-assurance. To feel empowered is to feel free and that's when people do their best work. You can't fake confidence or empowerment. Amy Jo Martin
We can enjoy a self-assurance that doesn't depend on the state of things outside ourselves, be it downturns or booms or whatever. Desmond Tutu
Self-assurance is two-thirds of success. Scottish Proverb