God gave us the prescription for a forever-kind-of-life in Ecclesiastes 3:14, "I know that whatever God does, it shall be forever. Nothing can be added to it, and nothing taken from it."
So the question begs to be asked, "Am I allowing God to do through me what He wants?" That's the key. Whatever He does is going to last. It will live beyond us. Can you think of people where this is true? Their lives and their legacy have lived beyond them. What about Corrie ten Boom? Hudson Taylor? Lottie Moon? Jim Elliot? I even think of people I've known and loved. Because they allowed God to do whatever He wanted through their lives, their memory will live in my heart as long as I'm alive.
I've been discovering the purpose for which God has created me. I was talking to my sister today and told her it's like I'm throwing things on the wall at this point to see what sticks. Am I supposed to be mentoring people? Blogging? Speaking to women? All I know at this point is to continue doing what I know to do in the power of the Holy Spirit and do it to the best of my ability. And I believe God is going to do a work through me which shall last forever. God will do it. I just have to be submitted to Him.