Fixing a marriage

What is something that saved y'all's marriages when times were rough? My husband admitted that he's not happy. I'm sure it's one of those things kind of like the difference when men are sick and when women are sick.. the woman carries on and the man thinks he's dying and it's all temporary. Or maybe it's more serious than that.. he's definitely holding back something though. Is there something I can do to patch this I mean I do struggle with depression and bad anxiety and anger issues and its been very bad lately but not THAT bad.... Idk I just want to make him happy and idk what to do especially if he's already emotionally out of the relationship.. that would be awful. Any words of wisdom or advice would be very much appreciated.

And yes I brought up counseling and he is not for it. He didn't sound like he wanted to actively work on it rather than just "see where it goes" but I personally would like to work on it.