David Hockney is an artist who continues to stay vigilant about his art.

This dude is 85 years old and he’s promoting a new book of his drawing he made on his iPhone and iPad:

In 2009 Hockney began “drawing” this view on his iPhone (above), with just his thumb. “There was great advantage in this medium because it’s backlit and I could draw in the dark,” he writes in MY WINDOW (Taschen, $150), a collection of 120 digital still lifes he completed between 2009 and 2011. Plus, he never had to leave his bed.

Keep those creative habits like Hockney.

Stay vigilant.

iPad drawing, Untitled 104 by David Hockney, 2010
iPad drawing, ‘Untitled 104’, by David Hockney, 2010