100% assurance of your salvation and righteousness can only come by trusting what Jesus accomplished NOT what you accomplished.
I guess it depends on how you define “salvation.” For me, it is being right with God, and you’re only right with God when you “do” the will of the Father, as Matthew 7:21 states.
Acts 2.38. Beginning of the NT church. Formula given by Jesus at His baptism. Told Nicodemus in John 3 U MUST BE BORN AGAIN. Fulfilled in Acts 2 for salvation
What did he accomplish? He had a bad weekend and f…off to heaven. People are still going to hell