Part of being a good communicator means being able to sit on both sides of a situation. No matter what your position in life may be, there will come a time when you, too, must receive criticism of your own. Although you may be forced to take advice from someone who doesn't use the same principles of offering constructive criticism as you, you can approach the situation in a manner that increases the likelihood of a positive outcome.
Recognize the Value
You already know how important constructive criticism is in getting others to heed your advice. You are now in a situation where you are on the receiving end. Approach the conversation as you would wish your counterparts to approach it: with an open mind and an eye to self-improvement.
Deflect Personal Attacks
You cannot force the other person to refrain from belittling your character or yourself as a person, but you can refuse to acknowledge personal attacks. When someone does cross the line between constructive criticism and just plain criticism, verbalize solutions that have to do with your behavior, rather than your person. Eventually, the other person should pick up on your cues.
Use Active Listening
No matter how personal the other person gets, do your best to keep your emotions at bay and focus on the important issues at hand. Rephrase what he or she says in ways that clarify the meaning but also make the criticism less insulting. Ask questions that demonstrate your willingness to change.
Open Your Mind
Avoid becoming defensive or closing yourself off to the criticism. Remind yourself that the goal is to improve your ability to function as an employee, friend, or spouse. By focusing on the ultimate purpose of the criticism, you may be able to avoid the emotions that can potentially cause greater problems.
Maintain Your Rights
Just as you are willing to listen to others when you offer constructive criticism, maintain your right to ask questions and offer solutions. This doesn't mean you should defend your behavior or point fingers in any other direction; instead, keep the other person (and yourself) on track to finding solutions.