[harnhua]

Always challenge yourself and make little, concrete steps towards achieving bigger goals.

I think it also depends on whether your confidence comes from within or without. For example, does one need external praise for something one has done in order to gain confidence? Or is it enough to just personally feel that a goal set has been well-accomplished?

Becoming successful and rich inspires confidence in a spiral, like what other posters have said. Faking it but always have something real--be it facts, good estimates, faith etc. behind to back it up also helps, I think.

Can't say I'm successful and rich, but I am confident and that probably came from doing things and getting positve feedback about them, and from inspiring quotes along the lines of, "Confidence, or the lack of it, is entirely up to you yourself."