Your worldview - your very perspective and mindset - sit on top of a whole bunch of invisible beliefs. Things like "I could never do that." or "Success is for people smarter than me." or "The rich get rich and the poor get poorer." or "Not everyone can be successful." and on and on. The reason I call these invisible beliefs is that most people see whatever their baseline areas simply acknowledging the truth of how the world really is.
They don't realize that those are things they are choosing to believe. If you can allow yourself to believe that anything that doesn't violate the laws of physics is possible, then suddenly a whole world opens up to you. But most people simply can't allow themselves to believe that. They feel like if they said that, they'd just be lying to themselves. And that, my friends, is yet another invisible belief - that they are limited to what they already think they're capable of.