I used to be tired of life, too. I was literally at rock bottom a year and a half ago.
You know what happened? Things got better than they were. Simple as that. My parents and I made amends, for example.
I’m still at a fairly low point, but it’s better than it was. All I can say is that no matter how bad you think things could get, they could always be worse. And once you’re in the bottom of the valley, there’s some way you gotta get back up the mountain. You can get through this, no matter what. I promise, things will start to look up.