The success of love is in the loving - it is not in the result of loving. Of course it is natural in love to want the best for the other person, but whether it turns out that way or not does not determine the value of what we have done.
If you write something and they all tell you it is bad - editors, critics, everybody - think it over and you may become convinced that they are right (though you are not to be ashamed or discouraged for a minute, but keep on writing).