"Fast" (as in fasting, not fast quick :D) Cure for Depression by Dr Bilal Philips of Islamic Online University. ~ In sha Allah it works when one wants it to, and do it (successfully) with Allah's Grace & Mercy & Help.
Express Your Emotions Telling the child how you feel about her behaviour develops the child's emotional intelligence and strengthens relations. Expressing your emotions include expressing your expectations. I expect you to be kind to your little brother. Hitting your little brother is not a kind thing to do. Negative emotions should target actions not the person of the child. You are unkind