Quit your job. Punch your jack-ass boss in the face for making you slave over benighn meaningless bullshit day after day of your wasted life. After all, why do we work? To pay rent? Find yourself a backpack, and a pair of closed-toed shoes, as well as sandels. Three changes of clothes, and several water bottles.
All this subject to change depending on you.
For example if you have a car, you can plan on sleeping in it, and having extra space to store items you think you may need. But keep in mind, a car is more expensive than a backpack, and therefore is still a bill. It takes gas, oil, and other fluids which need upkeep, it is liable to breakdown or pop a tire, and it cost money to park in some cases. Take this into consideration, you will have to work harder to maintain a vehicle, but it will do more for you in the end.
after all, you can venture out farther, collect more stuff to sell, and have more privacy, as well as be removed from the elements. All of which is harder on foot, but not impossible.
Once you have decided your method of transportation, (usually a combination of the two) you now need to figure out how to survive.