The summer after I turned 19 (in June), I worked part time at my boyfriend's dad's law office, and was trying to get into film school. I had just illegally been fired from my job at a cafe (I was fired after I got into a car accident whilst having a seizure and called out of work while I was being evaluated by paramedics and stuff, and this was my first time calling out without getting coverage). My boyfriend's parents were away for the summer so we were kind of living there with friends, using it as a party house.
I started community college in the fall, but I only went one day. My mom said go to school or get out, so I came home, packed my stuff up, and moved into a rented room in a peruvian family's apartment in Washington Heights. My savings lasted three months - and at the height of the recession, with little work experience and no higher education, I couldn't find a job in NYC.
I moved back home in the Winter after a bad bipolar episode (I was undiagnosed at the time). I got a call for a job I had applied to months and months ago, and started working 13 hour days 5 days a week in grooming. I LOVED that job, stayed there over a year and still worked there on breaks when I finally did go away to school.
There's no where you're "supposed" to be at 19. Some people are 100% financially self-sufficent, living on their own, some are married with a kid, some people own a home...Some still live with mommy and daddy and get school/life paid for, I think most are somewhere in the middle, either working FT or school and work, learning how to be adults.
When I was 19 I had friends buying houses with their salaried careers, and some struggling to pay their car payments with their part time fast food jobs. And some just worrying about doing well in school. If you're working hard and doing your best to take care of yourself and not ride on other people's coattails, you're doing fine.