Acts 2:37-39

Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do? Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.

To spend eternity with God, we must follow the instructions of Christ. This means that we must repent or our sins and be baptized. This is the only way to start. Baptism will wash away all that you have done wrong in the past, no matter how bad, if you are truly repentant, God will forgive your sins. This would be a great way to start the New Year.