How can I help a friend who has depression?

I am wondering what to do about a friend who has depression but to the point he’s uncertain of everything and has even tried to kill himself. And nothing I say has done much for him so far and all he does is continue to say how he isn’t worth anything. 

@Indy10 Hi Indy10, thank you for opening this discussion. That's wonderful that you're trying to be there for your friend. If you're ever worried for his safety, please don't hesitate to call the Suicide Prevention Lifeline at 1-800-273-TALK (8255) or text HOME to 741741, 85258, or 686868. Let me tag some other members who can maybe share their thoughts and advice with you.

Hi everyone, how are you doing? Do you have any advice for Indy10? How can we help our friends with depression or with suicidal thoughts? Is there anything we can say or do that will help to make them feel better? What would help you?
@jamesbrown‍ @Lisa1989‍ @finearthandmade‍ @Freedom‍ @Tempest22‍ @DebiD1957‍ @cmsun333‍ @AbyssPhoenix10‍ @Jescap314‍ @kate78‍ @Gina522‍ @froot1211‍ @Serena6590‍ @LIZANNA‍ @Ssgparrott‍ @rhiandah‍ 

Feel free to share here!

Take care,
Courtney

 I'm trying to help my friend who lost her daughter last year to drugs.  It's hard for me but I love her and we've been friend's since childhood.  I try to get her to  seek professional help.  Best wishes to you.