Part of growing up and learning who you are is failure. We ALL fail. It's how we learn. We're human and to be human is to fall down and pick ourselves back up, and learn from it. We carry on.
The world is tough. Growing up is tough. Being at the age where you're too old to be a kid but too young to be an adult is especially tough. Societal and parental pressure is tough. There is a lot of tough things happening, and will happen in the future, but I think you owe it to yourself to see just how beautiful life can truly be if you give it a chance. Your life has barely begun. There is so much out there you have yet to experience. Do you not want to see those things come to fruition? You're truly okay with throwing in the towel and forgoing all those things?
Have you sought any help for how you're feeling? Spoken to anyone? Tried any therapy? Any medications? Suicide should be the last and final option once all these avenues have been attempted and been unsuccessful. I know you're under a tremendous amount of pressure, but it's not the end of the world and life does move on.
Is your family expressing disappointment in you? Or is this something you've put inside your head? The thoughts we tell ourselves can be evil, cruel and debilitating, but it's not necessarily (and most often not) true. You're feeding this fear by believing it. Speak to someone. Do you have a good relationship with your family? Is your fear of failure something you could voice to one of those family members?
I'm here to tell you that academic grades mean nothing in the grand scheme of life. I dropped out of school in grade 10 due to a lot of dumb mistakes. So I didn't complete my highschool education. I'm now 36. I've been to college twice, and just finished a trade school with an 89% average just a few months ago. The future may look bleak to you right now, but there are ways around not having great grades, or any grades at all. University isn't paramount to success. Sooo many kids go off to university because that's what they're told needs to happen, and they graduate, amass TONS of debt, and can't get a job. The market is over saturated with overqualified individuals working at Home Depot etc because their MBA can't get them a job in their field. Who cares?
You don't have to follow the societal mould. It doesn't make you a failure. You can absolutely choose a different path and still lead a successful life. Success is what you make of it. Fancy cars, houses and the white picket fence means nothing when you hate your life, your job and your responsibilities. Find out what you really want in life rather than allowing society to dictate what you should want. Take some time to breathe. Life isn't a race. It's messy, it's imperfect, it's struggle, and it's joy. Academics is NOT the be all and end all, and certainly not a reason to lose your life over.
I beg you to reconsider. It's not worth it.