@ChloeGreenbergArt Maybe change your schedule. After returning home from work, and doing the necessities, go to bed asap. Wake up in the earlier hours of the morning do your illustration work, then go to your warehouse job. I sometimes do this. Many of my co-workers do gym training at 4am, then go to work.

Or take a short nap; it should reboot your brain. And a 30-minute physical exercise will wake up the entire body.

The procrastination question is a hard one. Try identifying how you've been motivated in the past. Was it emotional inspiration? Competition?

Are you easily distracted? Maybe a change to your environment can help.