Terrie Edith Moffitt (born March 9, 1955, Nuremberg, Germany) is an American clinical psychologist who is best known for her pioneering research on the development of antisocial behavior and for her collaboration with colleague and partner Avshalom Caspi in research on gene-environment interactions in mental disorders. Moffitt is the Knut Schmidt Nielsen Professor of Psychology & Neuroscience at Duke University (USA) and a Professor of Social behavior and Development in the Medical Research Council's Social, Genetic and Developmental Psychiatry Center at the Institute of Psychiatry, King's College London (UK). She is Associate Director of the Dunedin Longitudinal Study, which follows 1037 people born in 1972-73 in Dunedin, New Zealand. She also launched the Environmental-Risk Longitudinal Twin Study, which follows 1100 British families with twins born in 1994-1995. She has studied the twins from birth to age 12 so far.Read about Terrie Moffitt in Wikipedia
Although self-control is inheritable and does run in families and has a genetic component, it's more like height than anything else. Height is one of the most strongly inherited traits that human beings have and yet when we improve the nutrition of the population everybody gets taller. So you can shift the entire population by an effective intervention.
One of the most effective strategies to make your child more self-control is the weekly giving of allowance or pocket money as an opportunity for parents to teach self-control and model self-control. So rather than just handing the child the money and leaving it at that, the parent hands them a modest amount that has to be managed through the week, sits with the child and takes the time to anticipate what's going to be coming up next week, what the child would like to do and helps them to make choices and understand the limited amount of money they have.