Hello, This is regarding my elder sister. she used to be one of the brightest, learning, and caring person that I have known in my entire life just 3 years ago. she used to mentor me, advise our father, help our mother in her home chores. But all of a sudden she changed. Now she is all about show off, selfish decisions, egoism, no self esteem, lazy, forgetful, depressed, negative, short tempered, mood swings, not accepting her mistakes. she thinks she is always right...need help...