1 Pet 2:9 But you are a chosen generation, a royal priesthood, a holy nation, His own special people, that you may proclaim the praises of Him who called you out of darkness into His marvelous light; 10 who once were not a people but are now the people of God, who had not obtained mercy but now have obtained mercy.
2 Cor 5:16 Therefore, from now on, we regard no one according to the flesh. Even though we have known Christ according to the flesh, yet now we know Him thus no longer. 17 Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new. 18 Now all things are of God, who has reconciled us to Himself through Jesus Christ, and has given us the ministry of reconciliation,
Nope - generational curses ended at the cross:
Gal 3:10 For as many as are of the works of the law are under the curse; for it is written, “Cursed is everyone who does not continue in all things which are written in the book of the law, to do them.” 11 But that no one is justified by the law in the sight of God is evident, for “the just shall live by faith.” 12 Yet the law is not of faith, but “the man who does them shall live by them.”
13 Christ has redeemed us from the curse of the law, having become a curse for us (for it is written, “Cursed is everyone who hangs on a tree”), 14 that the blessing of Abraham might come upon the Gentiles in Christ Jesus, that we might receive the promise of the Spirit through faith.
A born again Christians generation begins and ends with Christ. Either Jesus became a curse for us or He did not. I believe he did.
What many (I believe misguided), people believe is the generational habits are curses. I grew up in an alcoholics home - my become an alcoholic was a taught experience - when I accepted Christ I was delivered from Alcoholism. Two years later, I set down my last drink, it was easy.