Pray a prayer similar to this and mean it in your heart, and you will be saved:
Dear Jesus, forgive me for my sin and rebellion against you. I ask You to come into my heart now and make me Your child. I promise to trust You with my life. I turn my back on the devil and receive You as my Lord. God is my Father and Heaven is my home. In Jesus' name, Amen.
Therefore, if any man be in Christ, he is a new creation. Old things are passed away, behold all things have become new. II Corinthians 5:17