I've known rejection my whole life. By my father, by family, by girls, by kids at school. When you give love and get rejection in return, it hurts. I stopped expecting anything in return when I give. I was picked on by every bully that came my way since primary school. My grandmother gave me nicknames all the time. I had no friends growing up and I thought of running away every day. I dropped out of college to support myself, took some financial risks and lost all my money. I quit my job a couple of days ago and I still have to get a new job. I'm on my last dime as I'm typing this.
But I know, somewhere on this earth, there's someone who needs me. I know it doesn't have to be someone I know today, it doesn't have to be my family, the girls that rejected me or my father (he wasn't there for the 20 years I needed him, then he passed away and we never met, having only spoken twice on the phone for no more than 2 minutes each time). Maybe it's an orphan who needs a mentor, maybe it's a woman who will think I'm "the one". Maybe it's a startup that needs another programmer, maybe it's just someone on the side of the road who just needs someone to talk to.
My good man, I just told you my story to show that there's still hope for people like us. We've known the worst, we've known failure and rejection but that's what makes us strong. We know how to give even when everything around us seems like a conspiracy to make us quit. You just gotta hold on. Speak to someone, call the suicide watch line. It will get better if you're willing to speak to someone.
All the best