Should I celebrate his short life?

[fumi]

Hi 

I lost my brother three months ago, who was 54. I feel deeply pity for him because his life was cut short. He could have lived another 20-30 years. I feel very sorry for him everyday. Most of the comments on grief are about how to deal with it, not how to think of the person they are missing. I wonder if I should not feel pity for him but celebrate his life? I cannot find anything positive about my brother dying at 54. He is too young to die. I cannot celebrate his life.