Regina Brett wrote an article with 45 life lessons she had learned by age 45. She has since turned 50 and added 5 more lessons. Some of the lessons include that life isn't always fair but it's still good, it's okay to get angry with God as he can handle it, save for retirement starting with your first paycheck, and that no one is in charge of your happiness except you. Another lesson is that whatever doesn't kill you really does make you stronger.