Unfortunatly , as time passes the more people close too you will die, it just makes you appreciate more those that are around now, because no one lasts forever.
I'm not that old and already have lost, both grand parents both birth parents , my fostermother, one brother,and six close friends to either accidents or suicide. You never know who and when the next one will go , so live for the moment and don't miss out on oppertunities to enjoy yourself, life is often too short. People are gone but not forgotten , don't live in the past, they wouldn't want you to.