Does your gym do classes? I find these are the best way to keep motivted. I have to book a spinning class the day before by 7.30AM as booked out pretty quickly. Once booked I feel morally bound to go as someone else wanted the place. Once there I can burn about 400 cals in one session and feel great. I then usually do a bit of weight training and cross trainer. In 2 hours I can do a good range of exercises, feel tired but fantastic and it keeps me away from nibbling food.