Feel like a failure

I’m supposed to go to a prestigious graduate school this fall. However with the amount of money it costs I don’t think it’s a good idea for my future. I don’t want to be crushed my debt. It’s 140k for the program. I dont need a masters for what I want to do, unless I go on to get my PhD and teach, which I don’t want to do. I really want to get my masters but the money is too big of a risk. I feel like a failure and like I’m letting my family down. It felt good when I told people I was going to this university. My family is full of academics and successful people. I haven’t done anything noteworthy and giving up this opportunity makes me feel like I have nothing and no future. I feel so terrible about myself right now I don’t know what to do. I’m lost and I feel like I have to start over. I’m so nervous about what people will say if I don’t go. People have high expectations of me because of the family I come from. I’m scared of letting them down