Cats dying

I’m aware this is a forum for life not death but my cats kidney is failing and he’s only 8. I’m 21 and I got him when I was 13 and he’s all I really have, I don’t have a girlfriend or many real friends I feel so he is the one thing I have to look forward to when I get home. He’s my son and this really sucks to know that he will just be gone soon. He is still here now but I know this won’t be the happy ever after outcome everyone always wishes for. Just never thought it would happen to me, my cat. I feel very helpless and that I don’t have much motivating me to keep going. I’d never hurt myself, but this situation has already done enough damage and I can’t stand this prolonging process of waiting to see how he will be in the next 2 days even though I’m fairly certain it will not be positive. Words of wisdom are much obliged