Persevere through the tough times. We had some rough times earlier in our marriage when I didn't know if we were going to be able to make it. But we didn't give up, and as long as you keep hanging in there anything can happen.
I once knew a guy that had been married 5 times. He believed in marriage alright, but didn't believe in sticking it out when things got rocky, as they do for all if us. Haven't talked to him in years, but somehow I doubt he's changed. I wish you and your wife the best.