When i am lonely , i feel like im going crazy insane what should i do ?

Loneliness: Loneliness is a big problem for humans, since we're basically social beings. But since you feel like you're "going crazy insane, " i suggest seeing a psychiatrist or other mental health professional who can help you with these feeling. At least their intensity can be assessed, and some suggestions can be made about your situation. On your own you can seek out companionship & involvement w/others.