Once, all I possessed with me was in one suitcase. I walked with it from Brookline to Boston Common, and tried to get a blind person to buy it for a quarter so I could say I sold it. He was suspicious. So, I offered to give him a quarter so he could buy it. No, he wouldn't.
So, there could be a problem. If someone fools oneself into thinking he or she can buy one's way into Heaven, Satan might keep people from buying the person's things, so he or she feels he or she can't go to Heaven!
So, you need to have the right reason for what you do.
appreciation . . . of all Jesus did on the cross for us . . . appreciation of Jesus, Himself, now . . . . love and adoration of God . . . not only trying to pay God off, like He is at some distance. There are people who can guilt-trip themselves, and suppose paining themselves will pay God off so they can keep doing their wrong pleasure things.
So, now I consider that if I love our Heavenly Father, I want Him to be pleased; I am not only about getting rewards for myself; I desire and seek what pleases Him. So, in case He enjoys having Jesus reward me, then fine
But Jesus Himself is our real Reward > Genesis 15:1. And we are rewarded with family love and sharing with one another who are God's children. This is now. God's love is much of all the best of our being Christians > Romans 5:5. And this love has us with God and with one another, sharing and caring as family.