so i have found that when my personal life is 'drama free' i begin to focus more on my anxiety and stuff like i'll be excited for something in the future and then i'm like 'wait.. what if i don't live that long?' it's soooo annoying i don't know how to stop it!!! :(

You're obsessing.
Try to re-focus, when those thoughts come.
Read, go for a walk....divert your attention.
Chances are you'll live a nice, long life...
You don't want to spend it worrying needlessly.
If all else fails, talk to your doctor.
There's med's for obsessive behaviour.
Good luck