No kids. Grown step and grand kids.
My growing up was easy actually. Middle class, BA suburb. “The Wonder Years”. Of course, like all kids, I didn’t see it as easy then. I had parents that loved me enough to be stricter than most of the neighborhood parents. I thought they were the parents from hell. Until I was about 30 years old. 
No, I try hard not to spoil my grand kids. But in at least one case, it’s a losing battle as there is such a large, extended, child/grandchild-less, well off trust fund family around her that, she is going to be spoiled no matter what I do. I worry about that. But, there is little I can do.
When I referred to “my own life experience” I was thinking of high school and college and the other students I knew predominately. I went to public school through all of grade school. It kept me humble.
But, I ended up in a well known, parochial high school with a mix of students from well off families from Alamo, Walnut Creek, etc. and kids from less fortunate communities like West Pittsburg or Oakland who got in through Christian Brother’s charities. I was “in the middle”. What I have observed over time is that the latter group seems to be more successful in life than the former. And, while I was in high school, I watched many in the first group self-destruct because, in simplistic terms, they’d had everything handed to them by loving, permisive parents who didn’t understand that they were taking away the incentive for self development in their children by spoiling them so.
Looking back some 40 years later, I can see that many of those from leaner backgrounds have managed to do quite well for themselves driven by what you refer to as hunger.
And, I attended UC Davis and encountered something similar. Many of the students I met my first year there were from the vaunted, Acalanes School District as well as a contingent from West Hollywood. Compared to me, most were brilliant. But, like those "rich kids’ from high school, combined with the social mores of the time, they self-destructed under the pressure of college. Whereas, students from a less fortunate background that I knew, especially those that were working and going to school as I was, focused on their academic and career goals and did very well for themselves.
And yes, IMHO hovering over your kids and demanding they do as you say and perform at a level you dictate is as likely to result in failure later in life as ignoring them.
I guess the best way to explain my view/experience on the matter is that parents that encourage kids to be independent and find their own way while providing enough guidance to keep them from falling off a cliff are the best parents and present the best chance of having those kids turn out to be well adjusted adults, successful in whatever why they define success.
At least that’s been my own life experience. But then again, what do I know? 