Really sorry to hear this, man. I had a friend commit suicide a few years ago and went through similar emotions. It's something that takes a while to accept, but you can move forward. Grieve in whatever way you feel necessary, and don't blame yourself. It's not your fault, know that he wouldn't want to put that kind of burden on you. Surround yourself with people who matter most to you; reach out if you need to, but also be there to support his loved ones through this difficult time.
But maybe most importantly, keep living life for him. Celebrate the beauty of the life you have and try to appreciate every moment of it. Always keep him in your thoughts, through your success and your failures, and know that he's still there with you every step of the way.
I'm sorry for your loss dude, really I am.