I am (slowly) learning to take blame less personally, by redefining blame. This is my favourite definition, from Gerald Weinberg's Managing Yourself and Others.
When I blame, I attempt to build myself up by tearing down others because I don’t have the confidence I can amount to much any other way.
Blaming usually fools people who are unsophisticated, or whose own self-esteem is at a low ebb.
The knowledgeable observer, however, sees the amount of blaming as a sure measure of how inadequate the blamer feels.