Success looking back at age 40

Let's say I am 40 years old. How am I going to determine that my life so far has ben successful. Obviously I would like to have a job that I enjoy doing, but also I would like to have a family. Looking back on life, it will be considered successful if I have no regrets on what I have done so far. The goals that I want to reach are attainable, and I believe that I can achieve them.