...if you're so lucky as to be that blessed.
Sounds as if you are. That's awesome.
It is not just luck. My observation has been that really really happy marriages have two selfless people in it. It is not luck to choose to be selfless yourself. It takes a lot of work, and is not fun all the time. I congratulate people for their success, I do not consider them lucky. (Even if I have not found the keys to success myself)