Hello, if you are of the belief that the mental health of your brother is suffering, then the next logical step is to consult a mental health specialist for assessment. A thorough assessment will correctly identify his problems and thereafter a management plan can be worked out. Your observation of linking his mental health to life stressors and events is correct, most scientific literature now believes mental health to be a biopsychosicial construct, where combination of biological, psychological, and socio-enviornmental factors contribute to mental health or mental illness. Hope this helps you.. Kindly seek a psychiatric consultation at the earliest near you.. Best wishes for you and your brother..