Good and bad criticism can both individually, achieve good and bad outcomes. Its human to dish out criticism, and sometimes certain people give extra venom in the criticism; justified that they deserved it because of X Y Z.
Criticism is a tool – do you agree? Its a tool to achieve an outcome and it may be an effective tool for each human. Criticism done well, provides a signpost on the journey of achievement. Criticism done badly addresses the person not the quality of their “effort”. Negative criticism as a way of life is interesting, as it achieves very little positive, but a lot of negative impacts.
Be positive in your criticism; criticise the effort not the person…so that your input achieves something great!!!