I take it that you are asking me if we need a idea of the standard of morality in order to live a good life. IOW, do we need to understand what is good, and why, in order to live a good life?
If that is what you are asking, it's a very interesting question. I don't think we need to be philosophers to live a good life (though merely parroting moral behavior without any real comprehension of what it is for sounds clumsy and like a limited form of flourishing, though appropriate in youth), but I think we have a psychological need (I could call this a "spiritual" need) to connect to some vision of the good life, and this vision may implicitly contain the criterion you mention. (For Christians, this vision is the life of Jesus Christ, of course. I suspect this explains, in part, why Christianity has done so well as a religion.)
I suppose my answer is a tentative "yes", keeping in mind that I don't expect everyone to be a philosopher.