Purpose of Proverbs

In what areas of life do the Proverbs of the Bible apply? Interestingly, the first few verses share 4 areas - business, religion, justice, and governance. It is the psychology of Godly inspiration as opposed to our modern day psychologies based on behaviour, sex, power, consciousness, etc. It is as relevant today as it has ever been. Unfortunately, the sayings seem strange because the context of when they were written have drastically changed.