Speaking from 41 years in the marital trenches, my advice is that marriage doesn't "work", it has to be worked at. Nothing worthwhile comes easy. I'll also add a caveat, there is no statute of limitations in marriage. Anything you say (or do) may be held against you at any future time.
One additional comment. My Bride and I have been married for a bit over 41 years. I'd be lying if I said I've always been happy. But, I can guarantee you I've never been bored. I think boredom has destroyed more relationships than anything else.