Well your trip serves as a great training tool for you. Now you know first hand the effects of altitude on your body and the importance of pounding down calories in any form of food to sustain your energy requirements.Another thing you hopefully learned is that you don't have to carry all your water with you because it is everywhere along the trail in the form of fresh mountain streams.Every trip is a learning experience and there is no failure in any Whitney attempt.Just experience for the next attempt.