Negative people see only the mistakes of others and treat these errors as if they are personal faults against themselves. Meanwhile, they cannot see the real efforts exerted and never give credit for all the right things others were actually able to do.

They find something wrong or something to criticize in almost everything but do not know how to give encouragement nor praise. They will rather watch others fail than  give proper guidance or practical advice.

They cannot differentiate between a temporary inconvenience and a real problem. They exagerrate the importance of the smallest details if these do not conform to their views or desires. In their own points of view they are perfectionist but in reality they are just being petty putting meaning and even malice in the most trivial matters.

Above all they do not see themselves as negative persons and will never admit to it. 

-Bienne d'Assousy