You are alive.
Sometimes I feel dead inside and there doesn't seem to be a reason to go on. When I have those thoughts I keep this in mind:
"Having a rough day? Place your hand over your heart. Feel that? That's called purpose. You're alive for a reason, don't give up."
Acknowledge the strength within yourself. You have been through so much and the fact that you are still here means you are worth it. So just breathe.