(of a person, animal, or other living organism) grow or develop in a healthy or vigorous way, especially as the result of a particularly favorable environment.
"wild plants flourish on the banks of the lake"
synonyms: grow, thrive, prosper, do well, burgeon, increase, multiply, proliferate; More
(of a person) wave (something) around to attract the attention of others.
What is confidence? The belief that one can rely on someone or something. Firm trust.
It is of trust in yourself or someone or something. Maybe, the ability to own your truth. To allow the negatives and positives to balance in a way that compliments your self identity. The drive you maintain that overcomes the self doubt.
Confidence doesn't mean you have to have it all together correctly in every aspect, but to be overwhelming positive or trusting in all that makes you, you. To decide to be self assured when all the absenses (or lack of) alarm you. Look for all the ways you are beautiful and pass on that trust in yourself to someone else, even when you don't feel like you've got it all together (you totally do though). That's what it's all about.