The statements "i wish you would be friendlier," "you are such a slob," and "you need to have a more positive attitude" are examples of

statements that either encourages a better mental approach towards others. But those statements can also represent a person not being very nice towards another. The views or opinions of those statements can carry an heavy burden toward the person(s) that was receiving those statements. Especially if that person has low self-esteem. Sometime stating fact to a person in that mindset can make them feel even worst about themselves.

 The statements that either encourages a far better mental approach towards others. However, those statements also can represent someone not being terribly nice towards another. The views or opinions of these statements will carry a burden toward the person(s) that was receiving those statements. particularly if that person has low shallowness. someday stating the truth to someone in this mental attitude will build them feel even worst concerning themselves.
Explanation
The statement also describes one behaviour with the other that is offensive and not friendly indeed a very harsh behaviour and it can state a fact to a person that it can make them feel worse and embarrass.