How will you measure your life?

One of my fears is that I will get old and look back on my life and feel like I could have done more. I fear that I won't accomplish everything I wanted to. I want to have had a "full" life, with experiences, stories, and been successful at work, home, and at church. That is one reason I like the sound of being an entrepreneur, because I feel like it will take me down the path to accomplishing many things.
Elder Christensen put it into perspective for me when he said, "I’ve concluded that the metric by which God will assess my life isn’t dollars but the individual people whose lives I’ve touched." He also encourages us to have a clear purpose in life and live by it. I don't want to wait for the purpose to find me, because it may be too late by then. It is my responsibility to seek it out and ask for God's help in figuring it out, like Elder Christensen did. 
In order to be successful, I feel like I will need to learn to become good at balancing many things. There will be a lot of things that will fight for my attention like work, family, church callings, hobbies, self improvement, etc. The important thing will be to set my priorities now and align them with my purpose in life. I want to go by God's measuring system.