[Badway]

Just looking for some clarity, because I stopped being able to trust my own processing. I'm a 40-year-old male married with four kids. I have a long history of severe concussions from college football and the Marines.
Over the past 20 years, and especially the last 10 my wife and I have noticed in marked increase in my moodiness, headaches, aggressiveness, and a decrease in my processing, memory, and cognitive function. It's gotten to where it seems that I don't accurately understand reality around me, or the way I'm behaving.

It's causing the great rift in my marriage. My wife struggles with the instability and especially the moodiness. And I feel like I'm going crazy because I can't seem to control it and I know that I'm not firing on all cylinders.
I've been through extensive counseling, testing, and I'm still working through supplements and meds but the decline seems steady and hopeless.
The bottom line is that my wife is trying to decide whether she can handle staying in the marriage. I can't blame her because I can't imagine what it's like living with me, but as you can imagine this is heartbreaking.
We have four boys 10 and under. Our desire a better life for them then a dad who is so unpredictable and his behavior, but I can't imagine not being around them.

I'm wondering if anyone has any advice or examples of marriages that were able to survive this.