Back in the 1930s, Carl Jung, the eminent thinker and psychologist, put it this way: Criticism has 'the power to do good when there is something that must be destroyed, dissolved or reduced, but [it is] capable only of harm when there is something to be built.
Marcus Buckingham, Donald O. Clifton (2001). “Now, Discover Your Strengths”, p.124, Simon and Schuster