There are many places where you can get help. If you are under 18 you will need your parents to take you, if anything the counselor will need to talk to your parents to see what is your home situation. Remember the counselor will not say anything to your parents or anyone else unless you want to harm yourself or anyone else. If you are 18 and older you could sing up for yourself to receive help. You could get help from places like HOPICS, (For Teens) and People Who are.
Below are links that will help you out, you just need to research what benefits you.
211 Los Angeles County
There are also teen's hotlines, which you could call. There are different programs such as LAYN who helps out runways, homeless and youth (12-17 Years of age) in Los Angeles County.
Los Angeles County, Department of Mental Health
Didi Hirsch Community Mental Health Services
24 Hour Suicide Prevention Crisis Line (877) 7-CRISIS or (877) 727-4747
Asian Pacific Counseling and Treatment Center