Life after high school

Is anyone else completely terrified bout life after high school? I have no clue what I want to do, and I'm a senior in high school. I'm not particularly great at anything, and the only thing that I want to do isn't really a good long-term career (plus I'd end up hating it). I joke with my friends that I was born to be married to a rich man because this comes up so much. I've taken career quizzes, I've had a bunch of meetings with my career counselor at school, I've talked to my peers, I've searched different careers, but nothing seems to feel right. Countless people have told me that people change their majors all the time, but I don't want to have to do that because that's time and money I've wasted.