Dear Friend,

Faith is activated when you speak. You are saved (born again) when you believe in your heart and confess with your mouth that Jesus is your Savior from sin. 

If you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved.
Romans 10:9 (NKJV)

Of course, you first must believe in Jesus.  When you pray, you speak out loud to God what you believe. To say out loud what you believe in your heart is called confessing your faith.