Do you care if your child will be successful in her/his future? You can find out by doing a simple psychology test called "marshmallow test":

Offer your child, empty of other distractions, a treat of their choice (Oreo cookie, marshmallow, or pretzel stick). The children can eat the marshmallow, but if they wait for fifteen minutes without giving in to the temptation, they can be rewarded with a second marshmallow.

If your child will eat the marshmallow immediately, then your child lacks self-control and this may indicate that she/he may need some training to improve self-control. Otherwise if your child can refrain from eating the mashmallow immediately in order to get the 2nd mashmmallow, then congratulations! Your child may be very successful in her/his future like getting a high SAT score.

Walter Mischel had shown that the child's belief that the promised delayed rewards would actually be delivered is an important determinant of the choice to delay, but his later experiments did not take this factor into account or control for individual variation in beliefs about reliability when reporting correlations with life successes.

This “Marshmallow Test” to assess your child's future success, was a study originally conducted by Walter Mischel and Ebbe B. Ebbesen at Stanford University in 1970. In follow-up studies, the researchers found that children who were able to wait longer for the preferred rewards tended to have better life outcomes, as measured by SAT scores, educational attainment, body mass index (BMI), and other life measures.

So do you want to know if your child will be successful? I bet you do. So give her a "marshmallow test" to find out.