I Miss My Grandpa Who Passed Away

2017 middle of summer.. A person that I didn't know too much of, didn't visit or talk much with, but someone very important and good in my life has passed away... I've failed to tell him everything I once wanted because of his illness because it was too late... I never said goodbye, something like that griefs me to death months later... Wish I could just have another moment with him and tell him the things I've wanted..