If you were going to write an honest book about your life, would it be a happy story or a sad one? If you broke it down into time periods, you’d write a chapter on your childhood, your teenage years, young adulthood, middle age, and, if you’ve reached that stage, your senior adult phase.
You would hit the highlights of your experiences, and describe the lowest points of your despair. Which category would get more space? When people finished reading it, would they admire you? Be inspired by you? Be jealous of you? Feel sorry for you? Dislike you?
Thinking about those questions could go a long way toward helping you assess where you are in your life. There’s still time to make edits. Still space for new chapters. You can still write your happy ending.