It’s all very well to be impressed by the extent to which the capacity of a 5 year old to delay the consumption of a marshmallow so that they receive two marshmallows later can predict their success in life.

What I’m less impressed by is the extent to which the same qualities result in ungratified lives?

I’ve seen many doctor friends successfully delay their gratification indefinitely to the point where they just miss out, on fun, and ultimately on life.