['Really tired of the person in my life continuing to repeat the same mistakes.', "I know that feeling, so frustrating!  Do you think there's a chance the person will change?", "I have no idea..but they have behaved as if they would in the past and never stuck too it! I don't know how much more I can take of this."]
I'm sorry!  Maybe you could try distancing yourself from this person, you have to protect yourself first.
Really tired of the person in my life continuing to repeat the same mistakes. I don't know how much more I can take of this.