What you believe about eternity will have a profound influence on how you live your life today!
Even if you aren't conscious of it, your view of eternity factors in your value system and behavior.
If you are one who believes life ends at death and there is no afterlife you will be motivated to pack in as many sensual experiences as you can ever day. You will be guided by the "eat, drink and be happy for tomorrow we may die" value system. And if this life is all there is, why not!?
Should you believe in some version of universal salvation that, too, will guide your values and priorities. For instance, if you believe that we are all essentially good people and God is a good and loving God Who would never send anyone to hell that will guide your moral code. Or, you may hold the belief that Jesus died on the cross to provide salvation so we are all saved and Heaven is assured. That will influence how you behave. Maybe you are of the belief that Heaven is gained through a merit system and if your good deeds outweigh your misdeeds you will earn you way to Heaven. If that is your belief then it will frame your moral code accordingly.
But if you are a Bible-believing follower of Christ you will understand you are sinful by nature and morally depraved. Not only are you unable to save yourself but you are uninterested in doing so. Until the Holy Spirit of God moves in your spirit to convict you of your sin and call you to Himself, you will remain spiritually separated from God. Until you confess your sinfulness and repent of your sins you will not know Jesus as your Savior. But from the moment you accept Jesus as Savior and enter into a spiritual relationship with God, your values, desires and priorities immediately undergo a radical change! You know that your name is written in Heaven and you have eternal life. Once you begin following Jesus you start living with eternity in mind. You understand that you are accountable to God and that you will have to be judged on your "permanent record". Because of the blood of Jesus and the grace of God, your "permanent record" will not keep you out of Heaven but it will determine your reward once you get there.
Your earthly actions get eternal traction! What you did yesterday, the decision you are making today and what you eventually do tomorrow will be recorded in Heaven!
Today will you order your life with the end in mind? Will you live with eternity's values in view?