Your boy seems a well together young man. Single motherhood is no easy feat. When he matures he'll think back to all of your struggles through life and have more empathy for the plight of women. I was raised by just Mum, and I sort of think that was a unique perspective of learning from a woman in her raw sense, without any male interventions. It was tough, being just me and Mum but I look back and think, well, that situation was a bit of a gift for me for future interactions with women :)

It's not all hard, trust me! I'm sure you're doing the best you can with what you have. :)