Yes! As do all things. If you're not willing to commit the time, energy, and empathy necessary to get a cooperative task done, don't start it.
> It requires mental, physical, emotional and spiritual support.
No! Co-dependence is the path to ruin. This is very different from empathy and rendering help. Don't be a crutch for anyone else. Ever.
> A successful marriage forces two people to put the success of the marriage above their individual successes.
No no no! This is the path to misery and unhappiness. Your interests should coincide! They should be mutually shared! The success of any partnership is based on common interests, not on the partners selflessly making themselves miserable for the sake of some perceived interest of the other party.
Always pursue your own happiness. A healthy marriage is where you can make the other person happy by doing just that.
> For it to work, individuality itself needs to be abandoned.
Absolutely not! This sort of romantic nonsense plays well on Disney movies, but doesn't work in real life.
You'll just make yourself miserable, then you'll make your partner miserable, then your kids, and then everyone else in your family.
Absolutely take care of yourself FIRST. If you don't take care of yourself and your needs, you can't take of anyone else!
Nobody needs a useless, moping wreck of a person who is always depressed. Take care of yourself, then take care of others.
It works the same way as those emergency instructions you see on a plane. Put your mask on first. If you're not breathing, you can't help anyone else by definition.
> So it's not really surprising that so many talented, ambitious people have had failing marriages.
So many talented, ambitious people have failed marriages because they over-think things. They go on the Internet and read stupid posts. Normal people don't do that!