Firstly, I understand that at 25 you think you are stuck where you are, believe me there are lots of different opportunities out there.
I have a job I love and am very lucky. It was very much luck though.
I would never quit a job until I have a new one, I have been made redundant twice and it was very hard to get work both times and makes life difficult.
If you can find a job that ties in with any of your interests it can be like getting paid to do your hobby.