The confidence that you have evaded the burden of self-conceit is merely one of the forms of self-conceit. This should be rather obvious, but is less so in the absence of any symptoms of such a confidence which are usually concealed beneath a bearing. You ought to wish not for assurance but for its collapse, and this can only be brought about through coming in contact with the self-conceit of others, which takes myriad marvelous forms. Whatever treasure you happen to be harboring there is a key somewhere that will expose it. You move forward expecting to exercise your talent and find that it is not you on centre stage but the other and their talent is precisely in slapping the smile off your face. No amount of introspection can do this but only looking in that terrible mirror which is the face of the other. But no, this overstates the case drastically, the conceit of otherness is quite different from but just as insidious as the conceit of self. They are complementary errors, just consider the emotions they each nurture.