sorry to hear about your loss. my grandpa passed away in 90, my one grandma in 87. and most recently my grandma which i was very close with passed in 2002.
its tough for the first year, thinking that they'll call you on the phone and say hi. and when the holidays come and go and there not around. its gonna take time hizzle but you'll eventually get through it.
just remember there lookin down from above their in a better place. and are proud of what you have done in your life.