Budgeting, which is simply not spending more than you make, absolutely works. There are tons of Americans who suck at this at all income levels. There was just an article the other day where a lot of people making 250k are living paycheck to paycheck (WTF?!?) And duh it will not help people suddenly become not poor if they are poor.
There is a big difference between telling people if they are wiser with their money they will be less stressed and able to seize opportunities and telling people a low salary will magically become a bigger one. I don’t think Dave does that, he tells people how to manage what they have and grow it.
Also having a healthy diet 100% works. Basically every healthy or athletic person exercises some level of food selection and portion control.
So sick of these takes that abdicate all personal responsibility and claim nothing can be done.
Own your life.