I'm sorry but do the rich really work that hard ?

First of all, for the rich work is optional, which means they get to choose the work they do. That's why rich people tend to be actors and artists. Maybe at times they do work hard, but it's for their vanity and mental health not of necessity. Their hard work isn't why they're rich, they were born rich.

Rarely do you find rich people cleaning old-peoples arses in hospitals.

Most hard-working normal people earn just enough to get by and most rich people were born that way.

While technically true, "most lazy people end up being poor" is still misleading. Most lazy people stay where they are, and there are already more poor people than rich ones. Statements about the resulting correlation aren't as constructive as statements about causation would be. "Most lazy people don't advance" is probably about as close as one can get to the original statement without being offensive.