I feel like my life is amounting to nothing.
What makes you feel like your life is turning into nothing?
I have given up on my life, I don't want to live anymore.
Life can be hard. Maybe you can get some support from friends or family. They can help you establish goals and focus so that you feel like your life means something.
You're probably very happy and I hate you for it. You don't even know or understand how I feel. What have you ever failed at? I'd fake being happy if I were you.
You shouldn't assume that other people are happy or have better lives than you just because they are coping better. Everyone has things that they struggle through, and it's unfair to think that your own difficulties are bigger than someone else's. How would you feel if I made assumptions about your life?