Positive thinking for a child during child’s growing up stage, even just from one adult in the family, goes a long way from what people could think, specially when couple of turbulent environments surrounding the child. It gives hopes, even only one hope. With a hope, a child can look at & have a dream for his/her future. Positive thinking also gives confidence & at least the minimum stability a child needs.
Negative thinking does the opposite. One with negative thinking, how clever & how successful one is, has almost no use in a child’s growing stage, if not harms or sends a set back message. He/she even blocks his/her positive qualities in the eye of a child.