It is sad that churches today are bad places to learn how to be saved. The failure to rightly divide scripture leaves us with the simple plan of salvation obscure and many times hard to understand. One Sunday it is asking Jesus into your heart, the next Sunday it is being born again or maybe saying the sinners prayer. 

Paul clearly explains the gospel by which we are saved. What we know about the finished work of Jesus Christ is revealed to us by the Apostle to the gentiles.

Romans 5:12 
Wherefore, as by one man sin entered into the world, and death by sin;
and so death passed upon all men, for that all have sinned:

We have all sinned before God.

Romans 6:23
For the wages of sin is death; but the gift of God is eternal life through
Jesus Christ our Lord

Sin's penalty is death, but Jesus offers us eternal life.

Romans 5:1
Therefore being justified by faith, we have peace with God
through our Lord Jesus Christ:

Ephesians 2:8-9
For by grace are ye saved through faith;
and that not of yourselves: it is the gift of God:
not of works, lest any man should boast.

We are saved by faith alone by the grace of God.

Ephesians 1:13
In whom ye also trusted, after that ye heard the word of truth,
the gospel of your salvation: in whom also after that ye believed,
ye were sealed with that holy Spirit of promise

Salvation is trusting the gospel of your salvation alone.
It is not saying words or praying a prayer.
It is not repenting or being water baptized.
It is belief in Christ's finished work on the cross.

I Corinthians 15:1-4
Moreover, brethren, I declare unto you the gospel
which I preached unto you, which also ye have received,
and wherein ye stand; By which also ye are saved,
if ye keep in memory what I preached unto you, unless ye have believed in vain.
For I delivered unto you first of all that which I also received,
how that Christ died for our sins according to the scriptures;
And that he was buried, and that he rose again the third day
according to the scriptures:

Knowing that you are saved is not an experience, a feeling,
or saying certain words. Knowing you are saved is belief.
Putting your trust in what Jesus did for you.
Plus nothing.
Salvation is about what Jesus did, not what you do.
Trusting in the finished work of the cross as your payment for sin.

Titus 3:5-6
Not by works of righteousness which we have done,
but according to his mercy he saved us,
by the washing of regeneration, and renewing of the Holy Ghost;
Which he shed on us abundantly through Jesus Christ our Savior;

Choose to put your faith and trust in what our savior Jesus Christ
accomplished for you on the cross.