how do you guys cope with aging and death ?

im 20, almost 21. yesterday, i found my old 3ds from 2011. all the videos are of me and my little sister playing, dancing, making videos, so on.

if you read my post (lord help me lol) youll know that i am a bad hypochondriac with unbearable death anxiety.

im aware 20 is such a young age, but my birthday being near has brought on so much anxiety regarding aging, death, so on. i dont understand how to cope with these facts. that im getting older, and closer to death than life.

so, how do you guys cope with turning older ? how do you cope with the fact that death is where youre heading everytime a birthday passes ? and how do you accept that your parents will pass before you do if they havent already ?

P.S , i have an appointment monday for a swollen thyroid ( and im scared ) ... i plan 100% to discuss my anxiety, and hope to get on medication for it or get recommendations from specialist.

thanks for any responses !