Committing even one little sin qualifies a person for hell. Christ took upon himself, the full punishment of those he came to save. This punishment is not just for what the world considers 'really bad people'. Don't assume that He does just because things may be going good for you or just because you survived some kind of serious accident or illness. Don't even assume God loves you because you prayed a prayer that you believe God answered.
Many people misinterpret the Bible.
God saves people by convicting them of sin and drawing them to Him by the Holy Spirit. Conviction of sin means that God causes a person to feel truly guilty about their sins to the point where they can no longer bear the grief and guilt, not just to the point of wanting to avoid getting caught by someone or to avoid the results of their sin, but to the point where they want God to rescue them from their sinful way of life so they can live a life which will please God. The kind of believing in Jesus that saves a person is not just a historical knowledge of Him. In order to believe in Jesus the way that He expects us to, we need Him to give us the faith to believe since we cannot truly know God unless and until God reaches out to us which He does through the Holy Spirit and through His word in the Bible. That is why it is so very important to read the Bible asking God to show you the truth about your need for the Saviour, Jesus Christ.