Reasons why it's important to get your life in order at 40 years old. Now that I'm 40, I can speak to a lot of people, both older and younger, and they understand. I've reached a point in my life where I know myself. I know my advantages and disadvantages, but if you don't trust yourself at 40, you need to realign your mind. The disadvantages of being emotionally immature at 40 years old can affect your life. At this point, your self-confidence needs to average above 70%. This means you can say no without fear of peer pressure, and when you want to work on your life, you can choose to let people go. Listen to this podcast and go to the website to learn more about how to improve your well-being.