I am profoundly sorry for you, I know how it feels.
I am healing myself now. It's a huge task, depending on the severity of the abuses.
There are 2 basic steps to ingrain your subconscious mind towards healing :
1. IT IS IN NO WAY, IT NEVER HAVE BEEN, IT NEVER WAS NOT IT WILL EVER BE YOUR FAULT. Despite whatever the abuser lead you to think, it is HIS fault. You only managed to survive by not reacting, nor you were able to react in any way.
2. You will face deep repressed emotions. In case you will feel as a no-value individual, if you feel unworthy, I can tell you the Gods and Satan treated me with great respect and helped me to heal, they did never treat me as a waste. So there is ALWAYS hope to recover even in worst cases.
I shared much about this in those posts, and some fellow SS also reported many helpful stuff :
https://ancient-forums.com/viewtopic.php?f=3&t=64400
https://ancient-forums.com/viewtopic.php?f=3&t=73533
It's a long path, I am in the middle of it. Should you need any advice (where I can!) or simply a friendly word, do not hesitate to post again here. I read the forum from time to time.