in entertainment and sales, confidence is almost everything. The thing is, outside those fields, confidence is dramatically less useful. (granted, sales skills have a pretty wide applicability, but my point is there are jobs that don't involve much sales, where confidence doesn't matter that much.)
Confidence doesn't have to tie directly to the work you do. One aspect of confidence is knowing that you have the skill to find work, or the smarts and personality to get a new job and learn the necessary skills quickly. A person like that never needs to fear poverty, which is one aspect of wealth.
Not fearing and not needing to fear are two different things. Confidence can help get you jobs, but without competence, you will have a hard time keeping it.
