Very interestingly, research studies show what makes one successful in life (measured by happiness - that also include having a purposeful life, loving relationships, resilience, productivity, physical and mental health and financial stability etc.). It is not one's race, the language spoken, how wealthy his/her parents are/were, high scores on standardised tests, what neighbourhood he/she grew up or even what one's IQ is. It is one's ability to pay attention to an object in a sustained manner (also non-judgementally in an open manner)- MINDFULNESS - which has over 30 years of scientific research history. That is why major Universities around the world(Harvard, MIT, Stanford, Oxford, Cambridge etc.) are running programs in the area and paying emphasis. It is about teaching "how to learn" rather than "teaching specific contents" (we are going back to the traditional quote of "teach them how to fish instead of giving them a fish")
https://www.youtube.com/watch?v=-yJPcdiLEkI