The complaining customer represents a huge opportunity for more business.
The profile of a wealthy person is this hard work, perseverance, and most of all, self-discipline.
Rather than shrinking away from your problems, grow bigger than them.
Success is dependent on the glands - the sweat glands.
You gotta have goals!
The solution is to change from the negative to the positive and one way to do that is to remember that failure is an event - it is not a person. Another way is to understand that your child might make a mistake, but the child is not a mistake