The real tragedy of death is people don't learn from it. Don't let his death be a vain one. Analyze and appreciate his life, grow wiser from it. Easier said than done, this I know. There's a reason you two crossed paths.
There's not a day in my life I don't think about my late grandfather. I smile ear to ear when I think about him...because I know he's with me...and I make him proud.
Sorry to hear about your loss. My mailbox is always open for you.