Here's my solution - think differently about what defines success. Success isn't something the world owes you, it's something shared that, if you maximize your potential and that of those around you, we can all contribute to. Who you are isn't defined by what you take and how quickly you get it, but by what you leave behind and how long it lasts. You get out of life what you invest in it - the same holds true for work, relationships and yes, even happiness.
The same applies to those who feel these youngsters are delusional and need to lower their expectations. The world you grew up in has changed in ways both subtle and gross. Don't be stingy, don't be cruel - mentor, inspire, build resilience. Hire good people, train them and empower them to excel. Remember, though, that the sorts of work you want from them now requires different tools, accommodations and motivations then you might be used to. Remember to listen; just because they're young, doesn't mean they haven't wisdom to share; just because you're established, doesn't mean you have all the answers.
Somewhere between the extremes lies the way forward. Progress always comes from the centre.