“Accept Jesus as your personal Lord and Savior,” or “Ask Jesus into your heart” isn’t the biblical answer.
It’s important to be saved from hell, damnation, and the stain of original sin, but what are we saved for? We are saved for union with Christ. Our salvation began when we were born again through baptism and God’s own Divine Life was restored in our souls, making us like Adam and Eve were in the Garden before the Original (first) Sin. As we go through life, we are united with Christ through the Sacraments he left as gifts for us, especially through Penance (forgiveness of our sins committed since Baptism) and the Eucharist (partaking of God’s own Life, His own Divine Nature, 2 Peter 1:4) – until that day when we are truly united with Him in heaven.
Scripture teaches that one’s final salvation depends on the state of the soul at death. As Jesus himself tells us, “He who endures to the end will be saved” (Matt. 24:13; cf. 25:31–46). One who dies in the state of friendship with God (the state of grace) will go to heaven. The one who dies in a state of rebellion against God (the state of mortal sin) will go to hell. (For the teaching on venial (non-deadly) and mortal (deadly) sins, see 1 John 5:16-17)
What I must do to be saved:
*I must be baptized with water and the Spirit. Mark 16:16, John 3:3-5, Titus 3:5, I Peter 3:20-21. (Exceptions:  If I desire Baptism but die before I can be baptized with water and the Spirit, God accepts my desire to be baptized, and  If I am killed (martyred) because of my faith, but I have not had the opportunity to be baptized, God accepts my death as my baptism, called the Baptism of Blood).
I must do the will of God the Father. Matthew 7:21
I must keep the Commandments of God. Matthew 5:19-20, Matthew 7:21, Matthew 19:17, 1 Timothy 6:14, and others.
I must accept the Cross (suffering). Matthew 10:38, Matthew 16:24-25, Mark 8:34, Luke 9:23, Luke 14:27. Phil 1:29, and others.
I must be a member of God’s true church. Acts 2:46-47.
I must confess my sins. James 5:16, I John 1:9, John 20:19-23
I must heed the words of St. Peter, the first Pope. Acts 11:13-14, Acts 15:7.
I must eat the flesh and drink the blood of Jesus Christ. John 6:51-58, I Corinthians 10:16-17, 11:23-30.
I must do unto others as I would have them do unto me and love my neighbor as myself. I must feed the hungry, give drink to the thirsty, clothe the naked, visit the sick and those in prison or give other aid to those in need. Luke 10:33 ff, Mt 25:31-46. “Do not neglect to do good and to share what you have, for such sacrifices are very pleasing to God” Hebrews 13:16. Good works don’t save us, but we will be judged by them.
*I must strive to be holy. “Strive for peace with everyone and for that holiness without which no one will see the Lord.” Hebrews 12:14
*I must endure (persevere) to the end. Matthew 10:22, Matthew 24:13, Mark 13:13.
And … ? What else must I do?