When I say hustling I simply mean working like crazy on short-term money makers, and having to do it over and over just to keep up as these types of projects generally don't have a long shelf life, as opposed to building true long-term assets.
There is some literal truth to this - the die part - but I disagree 200% with your sentiment.
I'm guessing you're pretty young ... you sound like where I was about 6 years ago.