It seems our destiny is set before we are even born. Our families (parents specifically) are a big part of it. Im thinking parents should have 1 lesson imprinted on them at the mat ward: your #1 job in 15 years will be to steer your immature yet independent son/daughter away from life-altering decisions that have no "UNDO" button. Everything else is unimportant.
EDIT: to be clear, this does not mean helicopter parenting or not allowing them to fail. It just means understanding when adolescents are playing russian rulette without knowing it, and letting them know about it.(ex. joining a gang)