Ask HN: Should I quit my job?

I also work on the afternoons on a side project that is making close to $100/m However, my day job is draining all my energy in a way that I am grumpy from Sunday night to Saturday morning. I wake up at 6:20, commute 45 minutes, work 8h, commute 45 minutes, arrive home at 18:00 and then I try to squeeze time for my side project, going to the gym, making groceries, hang out with my gf, etc. Should I quit my job and work on my stuff or search for another position that would give more motivation?

Source: news.ycombinator.com