Sure, sanctified means being made holy by God’s grace.
Main Entry: sanc·ti·fy
Function: transitive verb
Pronunciation: -"fī
Inflected Form(s): -fied ;
-fy·ing
Etymology: Middle English *sanctifien, *from Middle French *sanctifier, *from Late Latin *sanctificare, *from Latin *sanctus *sacred – more at [**SAINT **](javascript:lookWord(‘saint’)
1 : to set apart to a sacred purpose or to religious use
: [**CONSECRATE **](javascript:lookWord(‘consecrate’)
2 : to free from sin
: [**PURIFY **](javascript:lookWord(‘purify’)

We receive God’s grace through prayer and most of all the sacraments which are physical means of bestowing supernatural grace upon us. Receiving the Eucharist When we cooperate with God’s grace (Acts 7:51,Mark 16:20, Romans 8:28, 2 Cor 6:1, 1 Cor 3:9) we receive more grace for our obedience to God and He having more grace means having less sin which means dying with less sin and being more sanctified as we are being justified through our cooperation with God.
Many people have the idea that sin is only missing the mark, like an archer who shoots the arrow and misses the bulls eye, however sin isn’t just that (although it is that too) it is much more. Sin isn’t just missing the mark, but a lack of something and that something is
divine grace so that when we sin we lessen the grace we receive from God.
Think of the lives of the Saints, they cooperated with God’s will and receive great graces so that they could even withstand great amounts of suffering, and pain. All of the Apostles were martyred for their love of Jesus, save St. John who was still boiled in a pot of oil I’ve read. As we give up ourselves to Jesus we receive His favor and He gives us more grace which makes us sanctified. Those who give up their lives for the sake and love of Christ give up everything they can give and in that they are baptized in blood of martyrdom, complete as a pure offering of their lives to Jesus so that they are purified or completely sanctified on Earth and go straight to the beatific vision of God in heaven.
Good. You are doing God’s will and remember God is on your side, He is there for you. I knew a very holy priest who used to be at my parrish who would always tell me to
keep enduring, keep suffering for Jesus’ sake I really appreciated his advice because it was real, totally geniune. He realized that we all suffer, we all strive for the holiness with which we need to be with God, (Heb 12:14) and that priest didn’t gloss over the issues, he straight out said keep moving foward, keep striving for Jesus.
Yes, Jesus’ death on the cross opened the way to heaven which was closed because of Adam and Eve’s sin. Repentance is a verb which means we must cooperate with God. God gives us the grace to do the good works. Read Mt 25:34-40 and see the works God wants us to do; that chapter is one which the Saints so closely followed.
Many people misunderstand what the intent was for Christ’s sacrifice on the cross. Jesus’ death on the cross was to REDEEM humanity not save all of mankind. If Christ’s sacrifice on the cross was to wipe away all sin, then that would mean for one, that all sin would cease and we know it didn’t, people kept on sinning they even sold Jesus’ garments after which was a sinful act. And it would mean that everyone who ever sinned would get a free ticket to heaven and would be saved (univeralism) which is wrong too because scripture is replete that hell is real and some will go there so that all won’t be saved.
Jesus’ sacrifice was enough to wipe away our sin, however how we apply that sacrifice to our lives depends on how sanctified we become; how sanctified we become in this life, depends on how much purification (if any) we will need when we enter eternity which fixes our fate forever. I hope I’ve helped.