Drawing is a proven stress relever , it is used in therapy, insted of just drawing, try drawing pictures of things that are your stressers, about your mom, I feel you, but its not that big of a deal, and just remember, at least she notices you, could be worse.
About you extrems, some people just act that way, you just need to learn to be mellow, and you thinking about stuff, that always clams my mind, and do yourhome work, I hate it, but in the long run, its not that big of a deal, it will reduce your stress, and your moms, and overall just be good and help you