1. Admit that you are a sinner
"For all have sinned and have come short of the glory of God" (Romans 3:23)
No one is good enough to go to heaven on his own merit. No matter how much good we do, we still come short.
2. Realize the penalty for sin
"For the wages of sin is death ..." (Romans 6:23a)
Just as there are wages for good, there is punishment for wrong. The penalty for our sin is eternal death in a place called Hell.
3. Believe that Jesus Christ died, was buried, and rose again for you.
"That if thou shalt confess with thy mouth the Lord Jesus, and shall believe in thine heart that God hath raised him from the dead, thou shalt be saved." (Romans 10:9)
4. Trust Christ alone as your Saviour.
"...But the gift of God is eternal life through Jesus Christ our Lord." (Romans 6:23b) "For whosoever shall call upon the name of the Lord shall be saved." (Romans 10:13)
Eternal life is a gift purchased by the blood of Jesus and offered freely to those who call upon Him by faith. Anyone who believes on the Lord Jesus Christ will be saved forever. Being saved is a one time event.
Let us help you word a prayer. Realize it's not mere words that save, but your faith in Jesus Christ.
Dear Jesus, I know that I am a sinner, and I know I deserve to go to Hell. Please save me and take me to Heaven when I die. Amen