On Day 3 of induction I was aching all over, craving everything, with a pounding headache. But I had told DH that I was going to stick with this plan for two weeks and I would. Potassium and magnesium supplements got rid of the aches, getting over caffeine got rid of the headache.
Just keep promising yourself that you'll do induction for two weeks. And start thinking about how nice it will be once you lose the weight (clothes, compliments). The energy and good feelings will come, yes they will! Just hold on for two weeks.