It is my opinion that our life is not random, we are not aimlessly drifting in the world. No, if you are a Christian you are a new creation in Christ, and the Holy Spirit lives inside of you. That means you are endowed with greatness and can accomplish great things . I don't attribute any of the gifts I've been given to my own credit, for I know the bible says we've been given these gifts to do good, of which God has pre-determined us to do. So I stay close to God, and most importantly stay close His heart: Jesus; otherwise how can I know His purpose for me? This race Paul speaks about isn't a 100 meter dash, it's more of a 5K run. The good news is that we don't have to go it alone. We have more than a cheerleader on the sidelines, we have Jesus the Christ, and if you get tired, or if you should fall, He's right there in step with you, and He will carry you to the finish line.
Finding peace in God's promises.