I read the "Korean immigrant" comment slightly differently. Not as a "if that schlub can do it so can you!", but rather as pointing out that immigrants to most countries generally face all the same business challenges of any citizen plus the burden of being an immigrant in a society that may not always be welcoming. If someone can succeed facing all the same challenges you would face plus a few more it can show you that your challenges aren't insurmountable. Or maybe the person is just so head-and-shoulders above you that you shouldn't even compare, but that is less likely in my experience (i.e. variation amongst people in sub-groups, say entrepreneurs, are generally not as vast as people think, mostly because most people only compare against the outliers).
