I think the teacher of a child is generally people who he/she likes
the most. Unconsciously or not, almost all children loves their
parents, even if parents mistreat them. So, the parents have a major
role on their rasing. However, after a certain age, mainly when they
are teenager, their friends are the people who their spend most of
their time and their friends are also who they give their full
consideration. So, teenagers will teach themselves each other: "Tell
me your company and I will tell you your character". That's why so
important to watch who teens are in company with. And finally here the
outcome of my thinking: the initial period of the raising of a child
will influence who they are, and so the friends who they will look for
in the future.
Krompter