To answer this question we must go to scripture and reason it out. James 2:10 says, "For whoever keeps the whole law but fails in one point has become accountable for all of it." In this passage James is telling us that if we break the law, even in just a small thing, we are accountable for as if we had broken all of the law.
Although this is true, it is not necessarily saying that all sins should be looked at on the same level. Some sins are worse then others. But, even in one small sin it is an offense to God and His law. To break the law is to disobey the law-giver. Every man is born with a sinful nature, we have inherited it from Adam. Sin, no matter how big or small, can lead us away from God. Only one tiny sin is able to condemn us to hell.
However, God has send His son Jesus to die for us. Through His death our sins are forgiven. No matter how small or large our sins are, Jesus took them upon Himself and payed the punishment. We need to now repent of our sins, believe in God and walk a Christian life.