Just the fact that Jesus came and died and then rose is all you need to know and believe, to be saved. If He needed your help, He’d have asked.
That’s the starting point, yes. And yet, the scriptures clearly stated that we must “strive for holiness, without which no one will see the Lord”! (Hebrews)
Acts 16:30:31 Sirs, what must I DO to be saved? BELIEVE on the Lord Jesus Christ and thou shalt be saved.