Talent and ambition can take you far, even if you're not in the perfect job. But if you don't truly live and breathe investment banking, there may be a ceiling on how far you can go.
"One, they have to actually want to at some level enjoy or love finance. It is what we do," Beiser said. "Whether it's you need to read the FT or the Journal or you need to want to care what's going on in the news, that just has to be part of your DNA and blood."