You get a perfect life partner is something your effort or efficiency or luck or combination of all?

Some boast it is totally their effort and efficiency. Is it? If it is true why do some of them ends up in divorce. You could have used your efficiency and effort to make sure you would not end up in divorce.

Even if you are a genius, you will not be able to understand your partner thoroughly, before marriage or living together and even after marriage for that matter. Without thorough understanding how would you make a correct judgement? You make judgement to the best of your knowledge.

So, there exists the element called LUCK once again. Only lucky couple live together forever.