Criticism is expression of disapproval of someone or something on the basis of perceived Faults or Mistakes.
Ideally we should not be criticising anyone especially if it is viewed or taken as a Personal Attack by the Recipient.
However i feel Criticism especially by someone who you feel is close to you should bring positive and constructive effect on you.It is a Blessing in Disguise, it can make you introspect rather intensely and bring in you the desired changes which in fact are the need of the Hour. History beckons that people who have taken Criticism in positive stride have made remarkable amends in their lives and drastic changes have happened in their lives for Good. Criticism when not taken as a personal jibe can help you make serious amends and can remarkably shape your overall personality..
Thanks and Stay Safe and Stay Healthy.