Did you start out your day with an empty cup? The focus of the fourth day practice is to spend the day being as open and receptive as possible in order to recognize that opportunities for learning are everywhere and can come from anyone and everyone. The full cup has no room left for anything new. Opportunities are overlooked and missed every day when we think we know enough, or already know what we think we need to know. The empty cup attitude is one of humility and receptivity, and ultimately the most rewarding attitude we can maintain. Give it a try and see what you find out that you may have completely missed.