This is so basic! We are not supposed to be effective witnesses for Jesus is we can't even know for sure if we will even make it to heaven! Stop the bleeding! Read the Bible for your own sanity! The Scriptures will calm you down and you'll KNOW the simplicity of going to Heaven and not Hell!!!! This is one of the most dominating themes throughout the Bible is having a calm assurance that you will be with the Lord FOREVER. Why on earth (literally) did He come to SEEK and SAVE the lost if it was so IMPOSSIBLE? Get rid of your doubts and start being happy again KNOWING "Jesus Saves" and He "SAVES YOU"!!!!!!