It is enough to fix every problem? No, but most of them.
It will improve the marriage? Yes, a lot.
Then, it is easier to fix the problems it can't solve? Yes, it is. Do it all you women around the world, and we'll build a better world to live! (Note: do it even if you don't know how to do it, you'll learn from experience. And we know we don't want you to practice with other people)