Way too many to narrow down into only two, but a couple that really stand out in my mind and heart are the first time I really looked at myself in the mirror after having shed over 100 lbs. worth of the wall I'd unintentionally built around myself with a lifetime of choices I'd been grossly misled to believe were "safe" and "necessary" for human consumption and such. Scarily beautiful, to me, and incredibly eye opening on so many levels.
One of the most beautiful sounds I remember hearing is the sound of all the different bird varieties that visit daily, along with the flow of the mountain stream. I had never previously taken the time to stop and purposefully enjoy each individual sound before, as my hurried state of trying to get from one external obligation to the next always trampled them out.