In order to be successful in any one pursuit it takes up time and resources devoted to that pursuit. This of course diminishes time and resources to any other pursuit so one’s life becomes defined by that chosen pursuit. They say if you will be a millionaire you will be so by age 25 as after that the chances diminish enormously statistically.
This is because below the age of 25 it is easier to take a risk and devote all your resources to a singular pursuit. After age 25 people have accumulated more in their life that each thing or part takes time and resources and investment in order to maintain, ie friends and relationships, commitments, and stuff.
It is easier to gamble for successes below age 25 as there is really nothing too loose. After age 25 we tend to have accumulated things, commitments, and relations thus we have more to lose and therefore become rightly so more risk adverse.
People over age 25 who continue to take risks might not be the best people to be in relationship with or be the best at parenting. Their ability to have balance is counter their ability to take risk as it is the balance itself that has to be put on the table and gambled to be successful. Again easier done below age 25 for if you crash: savings, relationships, time, all is at that point replaceable.
When you read about people who have it all, they gambled and won at a young age or were left with the resources to start with then they scaled back appropriately as they accumulated things of value to them, friends, relations. They no longer are risking it all. They are focusing on balance. After kids are grown and one is retired there is another opportunity to risk, the Grandma Moses phenomena.