Of course things can change. But you have to allow it to happen. If you keep conceiving of yourself as someone who's bound to be miserable, you're not going to escape that. The universe isn't going to change for you... it's you who has to change. I'm not saying you gotta force positivity or anything like that, but you do have to keep an eye out for successes, and remind yourself of them. It's so easy to wallow in the bad stuff, but that doesn't help us. We need a bigger perspective. Somewhere down the line, you'll come to terms with yourself. Practice a different view, and eventually, the view will settle. You know what you want, so start working towards it.