modern proverbs (a group project)

I was thinking about modern day proverbs that would be good for passing on to your children. This thought came to me while I was chatting with Lem and said, "There is certainly no backspace button with words from the mouth." Does that sound too tech/computer centric? A lot of the proverbs in the book of Proverbs are that simple and "obvious". But the author still thought they were worth saying. What are some other modern proverbs or modern translations of ancient proverbs which would be valuable to have?