Lots of hydration. Weekly deep treatments. Protein treatments. Put oils on at night to soak in, then rinse out in morning. Use leave-in conditioners.
I don't think there is any way to "get rid" of damage other than to cut it off, or to wait for it to break off. Technically speaking, once your hair grows out of your scalp, it is dead, and you cannot revive something that is already dead. However, you do not have to completely cut off all of the damage in one go if you aren't comfortable with that. There is always the option of growing it out and then slowly cutting it, little by little until it's all gone. Good luck!