For me working upon my self-esteem has been one of the most difficult and yet rewarding endeavors I have ever undertaken in therapy. One of the biggest lessons I learnt was that my character and my character alone was how I should measure how to view myself. Once I realized this everything else fell into place.
I finally understood that criticism, if founded, means I have done something wrong not that I am something wrong. Once I reached this understanding the impact upon my life was profound. I used criticism as a trigger to put things right if I had wronged anyone and to correct my behavior in future; rather than berating myself for messing up, I celebrated it as an opportunity to grow.