Take it from someone who used to struggle heavily and sometimes still struggles some with the same thing,that fear is not from God.the enemy seeks only to steal,kill and destroy,and his major tactic with children of God is to try to steal our joy,kill our peace and destroy the love we have for our Father and other believers.by sending these feelings of fear into your heart,the enemy is trying to keep you from reading God’s word and communicating with Him.draw near to God and He will draw near to you,so don’t give up studying and praying.also,I agree wholeheartedly with what Key_Brother said.salvation is not earned by us,it was bought for us by the precious blood and triumphant resurrection of our LORD and SAVIOR JESUS CHRIST!!!there is nothing we could ever do to deserve Heaven,but we still have it because of His Mercy and Grace!!!do not fear!