expression
instead of blaming others, blame yourself; it is easier to blame than do better
Proverb advising self-reflection over resentment of others. The literal meaning is 'rather than resenting others, resent yourself'.
失敗したときは、人を怨むより身を怨めという言葉を思い出す。
When I fail, I recall the saying 'instead of blaming others, blame yourself'.