Mortality has hit me when I was very young so I had to deal with much younger than most. I am a only child with no Aunts, Uncles and only one distant cousin who I have never met. My Father died when I was 20 and I lost my mother eight years ago. So the only living relative I have is my son. I also had a near death experience about 13 years ago. That will really wake you up. I flat lined and had zero percent oxygen in my blood stream. So you could say I was brain dead as well. It took me years to get over it and then lost my mother and went through that.
But I guess you could say it changed me. I stoped doing what was expected of me and started living for me. Not putting things off but doing them now. The few friends I have I try to treat like gold. I have remarried and he comes from a big family. Not why I chose him but what a blessing it has been. I love his mother almost as much as I love my own. Her English is terrible but she tries so hard to talk to me and let me know how much she loves me. I feel God has given her and his family to me when I really needed a family. She made a speach at our wedding and told me "You think all the family you have is your son. But this is not true. Everyone in this room is your family now. Because you love my son and make him so happy. I love you and you are my daughter." Okay there wasn't a dry eye in the house.
My point is, sometimes family comes in a different package. The people who come in and out of your life, let them know DAILY you love them. Then when they leave they stay a part of your life. Just some advice.