Lurker > HotDogButts

Also if you have a tough time figuring out how to be independent in your second job, what are the jobs youre working now? Being in an office 7 days a week can be brutal. But if you have an office job M-F, try to get a job mowing lawns on the weekends, or harvesting vegetables at a local farm, etc. The change in environment, even if its still work can help ease the grind of it.

Quit and find a better second job if you still need the money. What are you good at that you can do on your own time and make some extra cash?

Personal training, tutoring, graphic design? There are plenty of things where you can make a solid amount per hour that wouldnt necessarily make a great full time job but provide you with a good time/reward ratio that you can schedule around your primary position and not feel like youre grinding out every day of your life.