If you have some time, look at the website Pink Truth which exposes Mary Kay cosmetics.
Just a tiny percentage of recruits ever make the money promise, and it's not because you didnt work hard enough, as they'll tell you, but because the business can't support all the thousands of consultants that they keep recruiting.
In fact, it's usually a losing proposition in which the recruits actually spend more money than they ever make.
It's a clever expose of a supposedly "respected" home party plan (MLM) business.