One area of Christian living that has received little to no attention (outside of the book of Proverbs) is that of how to receive and give criticism. With the exception of a few chapters written here or there, there is a surprising absence of material on this important subject. A few years ago Joel Beeke gave a PCRT lecture on how ministers ought to approach criticism. I have been immensely helped by Beeke's thoughts, and sense my own need to repeatedly re-listen it. You can find that lecture here. The other helpful work is Alfred Poirer's, The Cross and Criticism. Poirer does an excellent job of placing criticism in light of the Gospel. Despite the lack of substantive, biblical material on this subject, I'm sure that you will find these two works to be welcomed resources.