Others' reliability, not just a child's personality, affects their willpower.
Parenting can be the most stressful—and rewarding—job of your life. We can all think of ways we'd do things differently from our parents, and no doubt your kids will find ways they'll parent differently from you.
Human beings are social animals, and the tenor of our social life is one of the most important influences on our mental health. Without positive, durable relationships, both our minds and our bodies fall apart.