When I was homeless and living out of my old car, my biggest problem was police. Constantly hassling me. I have no idea how they would always find me, I think people were calling in me sleeping in my car (this was before smartphones).

They would always insist on searching the car for drugs and I basically had to give in. Not that I ever had any but they would make a mess since all my possessions were in the car and they could care less about tossing everything.

And yes, as many people say, getting out of the rut of being homeless is the hardest thing, it starts to completely change the way you think and everything becomes day-to-day survival.