yup--for years now- actually took a workshop and certified about 5 years ago- it is my (ohmmm) when I am feeling scattered or disorganized sitting down with a few tiles and a set of micron markers somehow calms things and helps me refocus- then I can go back to being productive.
visit & sign up for the 'zentangle newsletter' there are always new tangles to try & lots of inspiration- along with supplies...people are even 'zentangling' quilting designs on their quilts now days.