Might sound stupid, but considering a career with McDonalds/fast food.
I've heard the stories of people joining as Crew Members and working their way up to managers positions pretty quickly which would be good. I like dealing with customers and being in fast paced environments so it does look to be a good option.
But there's still that doubt in my mind, that 'it's McDonalds' and isn't a full time job.
Each to their own, so it's difficult to say. However I'd personally advise you to think of it more as a stepping stone to something better. That said, McDonalds is obviously a huge company which I'm sure has lots of fantastic positions, but I don't personally believe working within the actual restaurant would be very fulfilling.
First, you need to get a crewmember job there. Then you need to like it enough to want to get good at it - all of it. You then need to get good at it. Then you tart to think whether there is a future you might want to go for.
I've worked for them and have a couple of friends who are management. They worked damned hard and put in a lot of hours, but none of them thought anything of a career until they had worked there and got to understand the basics. Take it one step at a time and get a job there first before you plan on running the show.