My boyfriend and I took custody of his 5 year old brother due to drug issues at home. I wasn't expecting this kid to be the most disrespectful, defiant child I've ever met. I had tried and tried multiple different parenting methods, positive reinforcement with him earning treats and toys, etc. I don't know what else to do. I'm in nursing school and working full time as well and I just feel like giving up, but I know I can't. I regret agreeing to this so much. I thought I could handle this, but I've become so depressed it's scary. I don't know what to do anymore. I know that makes me a horrible person.