Managing Negativity to a positive outcome

Have you ever heard that "Negativity" is something that we cannot afford to have in our life, and we should always try to convert the negative energy to the positive one?

This similar message has been mentioned by many experts, written in many books.

Indeed! Negativity does somehow seem to be destructive, but there is always the other side of the coin!

I have personally encountered people who are extremely negative, and, helping them (short term) to work towards positivity does not change who they really are (their core behavior). Short term training and positive reinforcements do help changed their behavior, but only for a short period.