As you know I have my share of issues so I'm not the best source for suggestions. Never the less I do have some insight into marriage, we've been married for 35 years. I'm luckier than most, my wife has stood by me through more than anyone should have to. We've had heart breaking things happen and moved on. I have the Serenity Prayer on my phone to read all the time. I like the first part that most people are familiar with but I prefer the whole thing.
God grant me the serenity to accept the things I cannot change;
courage to change the things I can; and wisdom to know the difference.
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
Taking, as He did, this sinful world as it is, not as I would have it;
Trusting that He will make all things right if I surrender to His Will;
That I may be reasonably happy in this life and supremely happy with Him
Forever in the next. Amen
I don't pretend to understand why bad things happen or how to best deal with them but I do know that when I've pushed through and dealt with life's challenges I've always felt better about myself afterwards. For me I've fought a battle continually to cut my life short. Obviously I haven't followed through and each time I've won my battle I consider it a win. That line "Accepting hardships as the pathway to peace;" encourages me. I hope that eventually I can find that peace. I also hope you can find that peace.