If it's worth it...

If it's worth it to me I'll fight...
If it's worth it to me I'll win...
but, when your absolutely not happy, miserable even...why fight? Why go through the drama, aggravation, pain, and suffering for someone, or something that you could truly care less about? I am at that crossroad at the moment. And, I genuinely need answers. Can you help? It doesn't matter what the subject matter is, but, I just want to know what I should do if I don't really care.