If you would like to make that decision, you can talk to God. Praying is just talking to God. You can pray out loud or silently. Here is a suggested prayer. Remember, it's placing your faith in Christ that counts.
"Dear Lord Jesus, I know that I am a sinner. I believe you are God's Son who died on the cross to pay the penalty for my sins and restore my relationship to God. I turn away from my sins and ask for your forgiveness. Lord Jesus, I place my trust in you alone to cleanse me and give me eternal life. Please come into my life and take control and change me into the person you want me to be. Thank you for loving me and saving me, and that I am now a child of God. In Jesus name, Amen."