Right said. It will take time. It is quite a passage but, you'll be alright.
That totally sucks and I'm very sorry to hear it. Give yourself LOTS of time and try to be as kind to yourself as you can. If you can, try to help others as a way to turn your pain and your friend's death into something constructive. Just be patient, which is not always an easy thing to do. I wish you all the best.
I'm so sorry for your loss,,, that's gotta be way tough to deal w/handle,,, best advice I can offer is don't let anyone tell you 'how' to grieve