Probably nearly everyone can make it. Even the Pakistani kid born into intergenerational debt slavery that means he is making bricks from when he's 5 years old and has no access to school, healthcare or balanced nutrition. It's a difference of a 50% chance for the luckiest to 0.00005% chance for the least lucky.

But to see the world through the lens 'everyone van make it, just put effort and stop worrying' is simply absurd.