i need ADULT advice

hello... i need some advice from some adults, please.

i just turned 17 yesterday. and now i’m stressed because now that i’m a year away from being an adult, i really need to sort my life out. i dropped out of high school in freshman year. i had major back surgery and i have two metal rods the length of my spine on each side of my spine. i can’t lift over 10/15 pounds and even little ceasers said they can’t hire me because of my back. i need to get my ged, but i have no idea what to do with my life... i can’t even work at little ceasers and if i go to walmart and stand for more than 20/30 min my back starts hurting and i cry. i just feel so stuck and hopeless. i feel like a loser. it’s like being 16 was a security blanket of being a child still so i didn’t have to worry. turning 17 just hit me and made me realize how hopeless my life looks. i’m not lazy, i want to make something out of myself, but i’m scared and discouraged. anybody please comment