I was kind of thrown into living on my own after the death of my mom, and I truly was not ready for it. The schizoaffective made it terrible. I had initially thought I was really doing good. I wasn't really aware that I wasn't cleaning my apartment for several months and barely getting out of bed, delusional half of the time, just having trouble upon trouble, in my mind nothing was wrong. I am able to handle it now but it took almost 2 years for me to get the hang of it. and being a lot more stable has helped. I think it would have been hard for me even without the mental problems, they just made it a complete nightmare. I was in my own world, never leaving the house.
I'm not trying to scare you, living on your own is a wonderful thing, and now I'm actually doing very well with it but it's something you've really got to prepare for. There are things that can help the transition though case managers, etc.