How would I know if my child has negative thinking habits?

Thinking is best observed when a child is faced with a problem that is not easily solved. For example, a child wish to play with a toy inside a box. He can't get it to open. Does he give up after 1 or 2 tries? Or does he try different ways to get it opened, including going to an adult to ask for help? Giving up easily is a negative thinking habit.