Constructive criticism can be very beneficial to the receiver... depending on the situation, it can help the receiver know what to improve on and become better.

Criticism are always bound to happens and occur and Definetely sure when we make use of criticism positively, it tend to grow our life's positively

In a broad way I can say that constructive criticism can be really useful for people who are receptive and willing to improve. Other criticisms have their strengths and weaknesses, but as for negative criticisms, it is best to say nothing if you have nothing good to contribute.

Thank you very much for writing about this very interesting topic. Best regards.