My life hasn't turned out anything like I'd imagined or planned for it to be, even when I was your age, 16thDOCTOR. I'm pushing 68 now. In spite of being a bipolar alcoholic--and losing so much time to treatment and recovery for those--I suspect my life has been more interesting than the one I'd mapped out.
I've had four careers instead of one, I've tumbled to the bottom and had to figure out why--then sober up and get my life back (learned a bunch doing that), had the bipolar misdiagnosed & mistreated as depression for decades. Now I have an heroic pdoc. A support network.
I've survived and overcome, met awesome people, experienced incredible things, gone so many places, kept my guardian angel soooo busy ...
No on knows how their life is going to turn out, regardless of their plans or their health. I'm very grateful for the life I've had, and it's been way more great than sucky.
I hope you'll be able to say the same, at my age.
Roadie