Believe The Gospel.& put your full faith and trust in Jesus alone, and not yourself, or any other way for your salvation.

Jesus said : 

[Jhn 14:6 KJV] 6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.

The bible says : [Act 4:12 KJV] 12 Neither is there salvation in any other: for there is none other name ( Jesus Chirst ) under heaven given among men, whereby we must be saved.

Jesus said : 

Jesus said unto her, I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live: And whosoever liveth and believeth in me shall never die. Believest thou this? [John 11:25-26 KJV]

Therefore, according to Jesus and throughout the Bible we see the  only way to be saved is by believing in Jesus.  We must call and confess Him and believe the story of the Gospel in our heart that Jesus Christ came to pay for our sins, lived a sinless life, taught, was killed although He was inncoent, was buried, and that He rose back to life again after 3 days, as according to the scriptures.  

That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. 

For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation. ... 

For there is no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon him. 

For whosoever shall call upon the name of the Lord shall be saved. [Romans 10:9-10, 12-13 KJV]

[Eph 2:8 KJV] For by grace are ye saved through faith; and that not of yourselves: [it is] the gift of God:

[Eph 2:9 KJV] Not of works, lest any man should boast.

Jesus said he was God's promised Messiah & Savior : [Jhn 8:24 KJV] 24 I said therefore unto you, that ye shall die in your sins: for if ye believe not that I am [he], ye shall die in your sins.

Therefore, salvation through Jesus is a free gift available to anyone but it must be accepted and can not be earned.  

God has proved His love for us by sending His Son Jesus to die in place of us, and in order to pay for sins we've comitted when we profess His Son's righteousness and not our own.

Jesus said : 

And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up: That whosoever believeth in him should not perish, but have eternal life. 

For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. 

For God sent not his Son into the world to condemn the world; but that the world through him might be saved. 

He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. [John 3:14-18 KJV]

The Bible Says :  

But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us. Much more then, being now justified by his blood, we shall be saved from wrath through him. For if, when we were enemies, we were reconciled to God by the death of his Son, much more, being reconciled, we shall be saved by his life. [Romans 5:8-10 KJV]

The Bible is clear salvation is obtained simply by believing on the name of and work done by Jesus : 

[Act 16:30-31 KJV] 30 And brought them out, and said, Sirs, what must I do to be saved? 31 And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house.

[1Ti 1:15-16 KJV] 15 This [is] a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief. 16 Howbeit for this cause I obtained mercy, that in me first Jesus Christ might shew forth all longsuffering, for a pattern to them which should hereafter believe on him to life everlasting.

Jesus said : 

Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent. [John 6:29 KJV]

ABC's =  Admit that you’re a sinner who at times has lived against God's will for your life as found in His laws.

Believe in your heart that Jesus Christ sacrificially died for your sins, was buried, and God raised Him from the dead.

Confess & Call upon the Lord Jesus and you will be saved.

A = Admit You Are A Sinner : 

As it is written, There is none righteous, no, not one: ... For all have sinned, and come short of the glory of God; [Romans 3:10, 23 KJV]

And Jesus answering said unto them, They that are whole need not a physician; but they that are sick. I came not to call the righteous, but sinners to repentance. [Luke 5:31-32 KJV]

The first thing to do is to admit you have fallen short and ask God through Jesus to forgive you.  

This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all. If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth: But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin. If we say that we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just to forgive us [our] sins, and to cleanse us from all unrighteousness. If we say that we have not sinned, we make him a liar, and his word is not in us. [1 John 1:5-10 KJV]

B = Believe The Gospel ( Good News ) In Your Heart