8For it is by grace you have been saved, through faith—and this not from yourselves, it is the gift of God— 9not by works, so that no one can boast. 10For we are God's workmanship, created in Christ Jesus to do good works, which God prepared in advance for us to do. (Ephesians 2)

There is a conflict between good and evil in our own hearts for sure. But we are saved by grace through faith. Nothing that we could ever do could get us into heaven. You will inherit the New Heaven and Earth, my friend, have no doubt. At the same time, follow verse 10, and live as you should as God's workmanship.

Grace and Peace,
Hikaru