Try going way out of your comfort zone as far as music and art are concerned. Go way off the mainstream and explore new genres. Worked for me :-) and doing so was important for me, as I have been a musician for nearly 50 years now, and played pro on and off the road for 20 of those 50 years.
I did that on a regular basis when working that horrid job, and explored many genres. Depending on your tastes, you'll eventually stumble across something that reawakens your life music playlist. Don't let your job steal this most important part of your life and pleasure away from you :-)
Best! -- Allniter