Someone told me that the bigger the obstacles and issues you overcome together the stronger the marriage will be. The problem is, most married people don't have the ability or energy to "climb the mountain" in front of them...so they just give up. But, if they work through the problem, together, (and some problems can take YEARS to truly "solve") you will be much strong AT THE OTHER END.
If just takes faith to get to the other end! (and BOTH people willing to climb those mountains).