It feels like everything's been decided in advance that I'm...

It feels like everything's been decided in advance that I'm following a path somebody else has already mapped out for me. It doesn't matter how much I think things over, how much effort I put into it. In fact, the harder I try, the more I lose my sense of who I am. It's like my identity's an orbit that I've strayed far away from, and that really hurts. But more than that, it scares me. Just thinking about it makes me flinch.