Scared of DYING?

This few days I think nonsense because i have been hearing about cancer lately.To make things worst,I have been suffering with internal pain.Aiyo!!!I scared I WILL SUFFER FROM CANCER.But most probably I think nonsense only.I say this because my grandma and great grandfather passed away because of cancer. I DO NOT WANT TO BE NEXT. So can I ask you guys a favour?Pls pray dat I don't think nonsense....Thanks a lot!!!!