The only way to have eternal life is to believe in Jesus Christ and because you BELIEVE that He is GOD manifested in the flesh you OBEY Him. You REPENT and are baptized in water and SIN NO MORE, you seek His Holy Spirit to teach you and to guide you, to reveal Him to you so that you can know Him for real.
Many confess to believe in Jesus but they do not obey Him. Their faith is in vain and it cannot save them. If you disobey and disregard Jesus Christ you will perish.
May Jesus bless you.