Easy. Right?

“Nothing can enter into his rest save it be those who have washed their garments in my blood, because of their faith, and the repentance of all their sins, and their faithfulness unto the end.” (3 Nephi 27:19)

That’s all you have to do; accept the atonement, have faith, repent and stay faithful for the rest of your life. Easy peasy. Right. Not! But given the alternative, it is worth it.