Projecting confidence is an invaluable skill to have when you're trying to get people to charge up a heavily defended hill or take a building by force.
Anything else, not so much. I've witnessed many Marines try and fail to do something complex with ultimate confidence that brute force would solve the problem. The dedication is admirable but the range of situations in which it's sufficient for success is small.
In many non-military cases, doing nothing is a completely viable option that should always be considered. I'd venture to say that the most successful person is good at recognizing what deserves a Marine-level amount of effort and what can slide.
Anything else, not so much. I've witnessed many Marines try and fail to do something complex with ultimate confidence that brute force would solve the problem. The dedication is admirable but the range of situations in which it's sufficient for success is small.
In many non-military cases, doing nothing is a completely viable option that should always be considered. I'd venture to say that the most successful person is good at recognizing what deserves a Marine-level amount of effort and what can slide.