“Inspiration is for amateurs — the rest of us just show up and get to work.
“. . . things will grow out of the activity itself and that you will — through work — bump into other possibilities and kick open other doors that you would never have dreamt of if you were just sitting around looking for a great ‘art idea’.”
The first part of this quote is the one I’ve mostly seen; the second part is just as important.
If you wait around for inspiration to hit you, will you know what to do with it when it does? If you’re busy painting and drawing and creating while you wait for the bolt of inspiration to strike, you’ve already done the stretching and warmups so can start running with it straight away when it hits.
You may not be producing results that delight you in the meantime, but you are building muscle memory, getting more familiar with your materials and things such as brushstrokes and colour mixing becoming more intuitive and instinctive.
Inspiration should find you working when it arrives.