My mother think iam crazy and some people think knowing that im student and is negative think how can i deal with this situation?

Ask you mom: what it is you do that suggests to her that you have a mental illness. Think about these behaviors, ask a trusted friend for her/his opinion. See a mental health professional for an opinion. Change if needed or be strong and confident in how honestly you faced this situation. You mention being a student. There may be a counseling center at your school you can seek help from. Peace & health.