This is fair enough and true. Back when I was in my early twenties and late teens I used to grind all the time (going out to bars and talking to women). And although I experienced more than my fair share of rejection/disinterest, I achieved plenty of success and abundance.

These days I am just lazily sending out messages on OKCupid. And when I do go out to bars, I almost never approach.

So the "grind" reminder is totally fair.