i’m falling behind

i (19f) feel like i’m falling behind on everything in my life, i thought by this age i would be in uni pursuing my career but i am no where near that. it’s so frustrating and disheartening to see your peers be well off in schooling and you’re just there looking at them while your life wastes away. i don’t even have the courage to go to school anymore because i feel old to get into uni and see younger people than me in the same course as me :/ . i don’t know i feel awful