Help, I'm close to divorce

I'm 51, diagnosed with ADHD about 12 months ago and have been married for 24 years.  I just found this community and I'm afraid it may be too late.  The effects of ADHD on our life and marriage have been substantial over the last few years and even as I type this my wife is sending me texts telling me that  it's over.  She barely believes that ADHD is real and keeps saying that I'm using it as an excuse for bad behavior.  I've started  listening to the book and feel like it's literally my life.  I don't want to get a divorce, this is devastating.  Any advice?