Studies show that a very good indicator of a “successful life” is if the individual demonstrates self-control at an early age. This is in line with the marshmallow experiment above. Sadly, it’s not possible to really train a child to be more in control, so we’re left with our children’s genetic destiny. My DNA is very “in control,” while my husband is less so. I’ve got two sons and unfortunately they got my husband’s DNA. My therapist is preparing me to disengage as they will most likely be disappointing to me.