It's not a guarantee, it's the furthest thing from a guarantee, it's a risk. You're risking your present day enjoyment for the hope of future success. My brother tried the same thing when he invested heavily in his car repair company, which burned down and he tried killing himself, he's doing better now.

My dad sacrificed his whole life for me and my family, which was amazing for me and my siblings but it came at the cost of his passions. Work became his identity because it was how he provided for us, which sounds like a romantically self sacrificial great thing to do and it was until he was supposed to retire but because of financial commitments (mostly having to do with a now chronically depressed son who was in massive financial issues after his hop burned down and a host of other issues) he couldn't. And then when someone died at his job, he blamed himself and in the end took his own life even though investigations found it wasn't his fault.

What I've seen of hustle culture and this weird cult of responsibility that says to take on as much as you can for the sake of a myth of guaranteed success with little regard to your current wellbeing or the long term effects the lack of self care can provide.

That's not even getting into people gambling their life savings away on get rich quick schemes like NFTs and investments that often don't pan out but you don't see those stories on MTV cribs or whatever nonsense wealth fantasy shows people watch these days.

Hustle culture is terrible, damaging, and toxic for everyone involved except the wealthy people who are exploiting them.