Leave the old in 2012. Start "new" in 2013. Commit to follow Christ, to be "in" Christ. There is NO other way to eternal life. He is the way, truth, and He IS the life! Admit that you are a sinner when compared to God's righteous standard (not man's), and then repent, turn away, from sin. Put it behind you. Follow Jesus.
"Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come." (2 Corinthians 5:17 ESV)