Young guy here, only 23, but I consider myself moderately successful at the moment; I'm a salaried engineer making just shy of 6 figures.
That being said, there have been definite low points in my life. While I was going to local community college, I was living with my dad and my crazy-as-shit stepmom. She's like, Disney movie stepmom crazy. Anyway, I was preparing my applications to transfer to other schools and was lagging a little behind because I was waiting on my transcript request to be fulfilled by the school. At the time I was working about 30 hours a week at Barnes & Noble making coffee in their cafe for minimum wage with no tips.
Anyway, my stepmom (let's call her Nora, because her name is Nora) is upset that I'm lagging behind on transferring and pissed that I'm living "in her house, on her dime" while she has been unemployed for 12 years, supported by my dad. So, we get into an argument, and despite personal attacks at me and my mother, I don't retaliate and stoop to her level. Instead, I throw together a bag of clothes, move my laptop, Xbox and TV into my car so she can't destroy them, grab both sets of keys and go for a walk.
I called a friend who came to meet me, and we just sat and talked for a while when my phone rang. It was my neighbor calling me, saying that Nora was in my car, throwing my things into the street while my alarm went off. Knowing I had both keys, and that the pink slip was in my name, I called the police to report her breaking into my car. They showed up, escorted her and my dad into the backyard (though my dad had nothing to do with it) and I went upstairs, packed my things and moved out that day.
I was homeless for about three weeks, two weeks of which I was able to couch surf with friends, but I spent more than one night in my car. I didn't have much money, but I at least had a job. I found a place to live, and worked my way up from there. That was about 4 years ago, when I was 19. I still think back to those times and feel like it motivated me to grow more than I would have otherwise. I hated the experience, but I accept it, and it's helped shape me.