I don't feel like myself

This is dramatic. Very. I feel like a shell of my own self. To be fair, I never had a sense of self to begin with. But now it's really prominent. I feel like every decision I am making is wrong in one way or another. Like there is no right answer - to anything.
I don't care for people. Don't care for myself either. I just feel an immense emptiness.
Even when I am doing everything right. I am eating well and nutritional, sleeping, exercising, reading. My life is not bad. I am just tired. Maybe it's burnout. I doubt anything would help at this point. That's why I am here.