You cannot enter the kingdom of heaven and have eternal life if you do not REPENT of your own selfish ways and of the way that you used to do things, and go after Jesus Christ, follow Him.
You have to REPENT of your own ways and you have to follow the Jesus way. You have to obey the gospel of Jesus Christ. Jesus Christ is the WAY and the TRUTH and the LIFE, and there is no other, and if you do not turn from your own ways and follow Him His way, you will not find the way into the kingdom of heaven.
You need to REPENT, you need to repent of sin, you need to repent of your own selfish ways, you need to repent of your own ideas, you need to repent of the world, you need to repent of religion; you have to turn away from all those things, abandon them and go after Jesus Christ. Obey His words and follow Him.
It is not enough just to believe in Jesus. We follow Him because we believe that He is whom He said that He is, that He is the Lord God Almighty, that He is the King. The kingdom of heaven is here, and those who know and follow Jesus Christ, are part of His kingdom, but those who do not know Him, are not part of His kingdom, they will perish.
Obey the gospel of Jesus Christ, His words. Repent, turn away from your previous lifestyle, from following your own mind, from living in sin, from being like the world, from being religious, and live according to the words of Jesus Christ.
Turn to Jesus. Obey Him. Repent, be baptized in water and seek Jesus with all your heart. He promised to give His Spirit in you, to teach you and to guide you. He promised to make you new inside, so that you can hear His voice and that you can see the kingdom of God. But you first need to repent.
Repent and obey Jesus Christ. Follow Him until the very end to have eternal life. If you do not repent, you will perish.
May Jesus bless you.