My teeth always hurt because I can’t stop grinding them because of my stress and anxiety about the future

Every day I feel more and more bitter, irritable, unhappy, and negative about my life. Everything just fucking sucks. I haven’t talked to anyone outside my family in two weeks and I don’t even have anyone to talk to. I just switched majors because I can’t afford to continue the pilot program I was in. I switched to something I don’t give a fuck about because I have to take advantage of scholarship money or I’ll lose it. My biggest dream in life of become a professional pilot is seeming more and more impossible. I’m starting a new job soon which constant hard physical labor, and the HR guy told me it’s a depressing and difficult atmosphere. Its my only option though because it pays well and reimburses tuition, but it doesn’t matter because I’m not gonna last long anyway. I’m slowly losing my faith in God. Not even sure if I believe in him anymore, and I feel horrible because I know I’m disappointing my parents. And on top of that, I’ve never even been close to being friends with or dating a girl. Not like it’ll even be an option soon. My life is just going to turn into work work work work work and save every dollar for some dream I’m never going to get anyway. No friends, no girlfriend, can’t spend the money I earn on something I enjoy, no more hobbies because work schedule won’t let me. Mom calls me a loser, dad is visibly disappointed, sister is a bitch all the time. I just hate myself and everyone and everything. I’m constantly sad and anxious and angry. Wish I could be someone else.