Oh, how clearly I see your faults! Such distinctly highlighted flaws; it's as if the sun and moon mean to keep them illuminated in my eyes. My mind is quick to spell out a simple remedy for those defects. But alas, poor me! My own faults―which I only assume to have because all do―are blurred and obscured by a mental fog. I've no eyes with which to gaze back at myself. The sun and moon refuse their illumination, and my mind offers no sure elixir but a complex recipe scribbled in foreign words I scarcely comprehend.
There is no such thing as constructive criticism. There is constructive advice, constructive guidance, constructive counsel, encouragement, suggestion, and instruction. Criticism, however, is not constructive but a destructive means of faultfinding that cripples all parties involved. Don't be fooled into thinking otherwise.