Exercising

Well...I was doing quite well losing weight....and exercising.....last night I went to the gym.....ran for 20 minutes non stop on the treadmill...then did the bicycle...and then the weights....was feeling really good....and what did I do???? I went home and stuffed my face with M&M's.....Why would I do that.....so I just decided that today is a new day...and I will start all over again.....