Sometimes, its not only strangers who you must be a little wary of as you get to know someone new, but also be a little wary of people who are supposed to be your friends. Sometimes you need to consider what would be the worst thing that a friend could do to hurt you. Then you can think of how you can protect yourself if they turn on you. I used to be wary only of strangers, but trusting of friends. Now, I aim to be a little more savvy with friends too. Teach your children the same trait so that they can avoid being hurt and used by so-called friends who take advantage of kind souls.