Well it might be the wrong question. There’s only efficiently achieving an outcome or not.
A better question might be what should I focus on and how can I use my resources to achieve it?
When I feel nervous in front of an audience, my focus is inevitably on trying to be liked by them. That is a focus that is pretty guaranteed to dull someone’s confidence.
A more effective focus? To help these people understand what I’m talking about. Or to listen intently to the people in the room.
Confidence is a by product of placing your focus elsewhere.