Nonsense. No one "deserves" salvation. We are all worthy of death and nothing more. Remember what St. Paul wrote about how unusual it is for someone to die for a good man, yet Christ died for us while we were the foulest sinners. The gift of salvation is completely gratuitous.
Okay. Then live a life of hedonistic delights, sin a lot and often because that's what humans do, and then call a priest to give you Last Rites on your death bed, confess your sins, and all will be forgiven. Gee, wish I had known this earlier, I missed so much fun.