How Can Depression And Suicidal Tendencies Be Treated?

Hi Doc I came bangalore in 2010 for job search after completing my master degree but there was some problem in my family member, i had to go back home to solve.Problem was, My elder brother was in one side love, he is being alcohol addict,destroying his life.My parents were in depression,it was big shock for them,we never imagine such matter.Such news can make permanent bad reputation of us in our society.This all put very negative effect on me like deression and insomnia because i have to waste my time for such problem while my friends are preparing for interview preparation,i did solve family problem successfully i did play major role to solve that problem.when i came back again.This was end of year for fresher 2010 .So before starts of my carrier it is over.My all friends were placed, those preparing for job. Now I am doing nothing because my luck already had done, now i am feeling i am seriously sick.now i have permanent insomnia and depression.Every time different types of thoughts comes like i am doing nothing i am just eating food to be alive i should suicide because i am dying everyday slowly.i cant bear this unsuccess where i was fully deserve to do something in life.now i have nothing to do in this life.my interest is finished in this life.