Just an addition to Nicholas Smith's suggestion that in order to avoid adhering to a specific philosophical viewpoint, one adopt a standpoint of 'epistemic humility', which I don't think is that easily achieved. (I, for what it's worth, don't think that one can up and decide to epistemically humble.) Historical, contextual, study of the history of philosophy can help to lead one to take such a position. As one sees the extent to which philosophical questions and answers are deeply bound up with contingent historical circumstances, circumstances which vary greatly from our own, we can come to see not only that philosophical positions developed by 'the mighty dead' were deeply contingent, but also that our own cherished positions themselves are deeply contingent, and may well be bound up with contingent historical circumstances. Reflection on the extent to which philosophy is contextual in this way may well lead one to begin to question the assumptions that we take for granted and that underwrite the philosophical common sense of our day (assuming that it even makes sense to speak of such a thing), and can thereby lead to new ways of conceiving of philosophical problems. And that, to my mind, constitutes at least one form of philosophical progress!!
Studying philosophy is always done from a certain perspective, with certain assumptions in mind. (Every century teaches philosophy in a different way). So, if I am interested in philosophy, but do not wish to adhere to a specific set of beliefs - what do I do?