He's right...but you can't make your entire life about work and sacrifice
Your 20s are your young years...and while it's critical to use them wisely, you have to live life a little because once you hit your 30s real responsebilities kick inand then it's over because you have people who depend on you to handle your business.
I spent my 20s finishing undergrad and grad school...classes, thesis research, fellowships, study aborad etc etc....alot of my time was spent traveling everywhere abroad that i could get to....trying to publish research papers and getting my dik sukked as often as possible...i spent alot when i could have saved....and it was worth every second