I have a hardened heart and desperately need help. I have sinned against Light and have fallen away as per Hebrews 6:4-6. Is there any hope for me?
If it helps, the passage you quoted mention
s crucifying Jesus all over again. One thing, Jesus will never be crucified again. So this is rhetorical. It's not exactly talking about what you seem to think it is. I know, the verses standing alone without context scary verses, but calm down a bit.
Hebrews is a tough book, with lots of context that spans dozens of paragraphs that all must be considered simultaneously to create a comprehensive understanding of message of this book. Not everyone can do that so this book is often totally misunderstood. I wouldn't recommend reading just a few verses out of context and then begin questioning your salvation.
Do you have faith in the Son of God and what He did? Jesus repeatedly said that if you believe in Him then you're saved. It's the life, death, resurrection of Christ we put our faith in and His blood that gives us forgiveness of sins.
Matthew 26:28
28This is my blood of the covenant, which is poured out for many for the forgiveness of sins.
If you have sinned, then confess it to God.
1 John 1:9
9If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.
God bless and if you want to pray together let me know.