How do you afford your lifestyle?

I'm seriously thinking of quitting my job terminating my lease and getting an RV for me and the kids. The only roadblock I have is money. How do people afford it?

And I don't mean those with monthly income (i.e. disability, SSI, retirement, etc) I'm asking for the millennial gen like myself. I'm tired of working and everything I earn is spent on rent, bills, and more bills . I'm stressed out and I just want to travel and be free.