Exactly what Anomaly said, you need to have something that keeps you going. Something to look forward to.
I had something like you, I literally hated my life, was doing shit at school, didn't have a job, nothing to do when i got out of school, ...
Since then I've met someone and she changed everything by making me look forward to stuff. And in my case it's also travelling.
I wasn't much of a traveller before but she really got me into it.
As of now I have a trip with her planned to look forward to.
It took me forever to find her but it will happen. Just give it time and don't give up!