Admit to God that you are a sinner.
“For all have sinned and fall short of the glory of God.” Romans 3:23
Believe in Jesus as Savior of the world and your Savior.
“For God so loved the world, that he gave his one and only Son that whosoever believes in him shall not perish but have eternal life.” John 3:16
Confess your sins to Jesus Christ and ask for his forgiveness.
“If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.” 1 John 1:9
A simple sincere prayer is all you have to do to be saved from your sins and become a child of God. It can be as simple as this:
I know that I am a sinner and need your forgiveness. I believe that only you can forgive sins. I ask you to come into my heart, forgive my sins, and be the ruler of my life. Thank you for saving me from my sins. I now know that only you are my source of eternal life and entrance into heaven. I want to get to know you as I read your word, believe it, and do what it says.
If you are sincere in praying this prayer, you have been born from above by the Spirit of God according to John chapter 3 and are now a child of God. If you know another Christian, let them know about your decision. Find a good bible-based, Christ-centered church that preaches the word of God and buy yourself a readable translation of the bible (NIV is easy to read and understand).
Welcome to the Kingdom of God!