A.B.C.'s
Admit: that in comparison with God's holiness we are all sinful and without standing before him. (Obviously). Yes, it requires a good bit of self evaluation sometimes. The reward is well worth it. Confess to Him and ask Him to forgive your sins and you will be a new creature in Christ!
Believe: that Jesus came to earth for one purpose. To provide a righteous sacrifice and to do that which we could not do for ourselves. Die a perfect sinless death as God and Man. To provide the only option for Eternal Life, free with your decision. Jesus said you/we must be born again.
Call: Pray it now. Call upon the name of the Lord. He will remake your heart and save your soul. For an endless eternity with Him.
Go get baptised in water as soon as possible. This serves to confirm your decision. It is also a type of Christ's death, rest, and resurrection, in our place! Then start reading your bible and praying. The Gospel of John is an awesome place to start but read it all cover to cover, it will feed your new heart!