Congrats, getting your Black Belt is a very impressive feat. But remember what my sensei told me, some say the Black Belt is the end of a difficult journey, but it is only the beginning of an even greater on
I agree completely. When a lower belt getting your first degree black seems like the pinnacle and it is- then you realize your journey is just beginning. Don't let that deter you however- its well worth it, and won't ever deduct from how much of an achievement attaining black belt is. It is just the next step in your martial art career
congratulations!