In order to attempt and fulfill this promise I can continue to pray for the memory of my grandfather and apologize for not being there for him.
I can continue to talk to my grandma everyday and give her someone to talk to. I can help my parents make sure that she has financially all the resources she needs and that she is in a good place emotionally.
This will bring me back to God by easing my mind and not blaming every negative event on myself, on trusting God once again, and it will let me help my grandma as best as I can, despite not being physically there beside her. It will also make sure that she knows she's not alone she is loved, and I'm forever grateful for all that she has done for me.