Honestly... life. I just have always stressed about everything. I'm a worrier. Everything I do, I have to think about all the potential outcomes, focusing on all the potential failures. I have an overwhelming need to be, "good enough," and if I'm not, then that means I'm a failure and not worthy of, well, anything. I can't ask for help because that would mean I can't do something on my own. If I can't do something on my own, what good am I?
Logically, I know this way of thinking is flawed, but I can't help it. This is just how I've always been. I don't really know how to resolve it.