I would like to know why you think your child is "lazy" and "worn-out" these are two conflicting dispositions. Have you thought about a Vision Screening for Vision Therapy to see if he may have some issues that are not related to motivation? www.covd.org; is a good place to start. Has he had OT evaluations to rule out Sensory Integration issues that would have him appear to be less than normal energy levels? There are alot more to children than labels. And you are his only advocate.