Stressful Workdays & Life-altering questions

Has anyone ever felt like coming home from work and just relaxing but can't? Full-time jobs really take it out of you and you want to come home at the end of work and just sit around lazing about the rest of the day, but find it hard to do so. Even working at places like Tim Hortons (like me)and getting shifts that allow you to come home in the afternoon and do what you'd want the rest of the day, I feel like I want to come home and just sit there... but I'll feel like I am being a bum. I work from 7am till 3pm, and to me it seems a lot when your working monday through friday on those hours. Maybe it's because I work those hours and get up at 5:30am to ensure I make it there on time?*sighs* I don't know why I am feeling this way, and it gives me a negative look on everything lately. I am 18 years old, and I left my parents house when I was 17 and had graduated just so that I could find a job. There's no work out in the middle of nowhere. I feel like I've grown up way too fast. Anyone ever feel that way? I mean, I've graduated already and now I feel like I have to do something with my life. I wanted to take a break from things and just chill when I got out of high school. But I find myself in search of a good job and looking into all sorts of out of state colleges. I find myself wanting to leave this state I'm in, and make a life for myself elsewhere. I want my life to be better than what my parents had, than what my siblings have. I want to learn from my own mistakes rather than have everyone tell me that what I'm doing with my life already is stupid. So I work. I Work and I spend my money on useless items. I come home after work and just try to find things to do, even if it includes spending the money I spent long hours working for.

I'm honestly not sure what I need to be doing right now. Anyone have any suggestions? I know that in the end all is my choice, but I think If i had any suggestions I could take options and go from there.