Confidence eventually comes when we take first step forward.
We all have ideas in mind some are great ones with potential yet we hesitate to execute or begin with it just because of "it might fail" or like that friend of your who think have no capital for it.
The way I see some people fear failure more than death, fear of failing is where your confidence get shaken easily.
Taking risk is literally the only way these people are successful in their life.. only if we have this mindset of getting things done and let's care about the results later.. everything would've been so much better.