It may not be a lack of motivation, but rather your fears or beliefs that are truly holding you back. For instance, if you've been trying to lose weight by exercising regularly but repeatedly find yourself avoiding the gym or going for a run outdoors, ask yourself the real reason why, Dranitsaris says. Do you really not want to exercise? Or you are embarrassed to show your body? To help overcome your fear, make a list of alternatives that can help you keep moving such as doing a workout DVD at home or sweating with a friend in a place you feel comfortable, like a women-only gym.