If you died today, do you know for sure that you are going to heaven? The Bible says we can be 100% sure.
Salvation is a free gift from God by faith alone in Jesus Christ The Son of God. It is not by our own works. You don't have to go to church, read The Bible, get baptized, live a clean life, etc. in order to go to heaven. All you have to do is believe in Christ and his finished work. His death, burial and resurrection.