From the book Intentional Fitness, final chapter...
As human beings, we are all alike in three fundamental ways. First, we all have breath—we’re alive. Next, we all have 24 hours in a day, seven days a week, and 52 weeks in a year—the same amount of time no matter who we are. And finally, we all have free will—the freedom to choose how we will spend that time, and thereby choosing what we will build with our lives and who we will become.
The first choice we must make before we can enjoy a relationship with God or grow in spiritual fitness is to become a Christian. By Christian, I mean a true follower and disciple of Jesus and not just claiming to be a Christian because your family is Christian or you attend church.
If you either know you aren't a Christian or you're not sure, read Romans 3:23, Romans 6:23, John 3:1-21, John 14:6, Romans 10:9-10, 1 John 1:5-10, and Ephesians 2:8-10. As Jesus, Paul, and John tell us, salvation requires us to
1) believe that Jesus is who He says He is;
2) confess that you are a sinner and need Jesus; and
3) repent and change who is in charge of your live by turning from your own way and inviting Jesus to be Lord over your life.
If you are ready, pray with all your heart for God to forgive your sins, accept what Jesus did on the cross for you, and ask for and receive new life in the Holy Spirit.
Not sure how to pray? Ask God to give you the words, then in faith just pray what comes to your mind. Or you can simply pray "Jesus, I want you and need you. Come in to my life and take over."
If you’ve just prayed to become a Christian, welcome to the family! The angels in heaven are rejoicing over your salvation. And God is beaming, arms open wide to welcome you into His embrace.
Take some time to thank Him for what He’s done for you and enjoy His presence. Buy a good Bible if you don't already have one. Ask the Holy Spirit to guide you to a good local church where you can proclaim what you’ve done and begin your journey with other believers who can encourage you and help you grow in your faith.
Then just start walking and enjoying your new life.
It's that simple.