Relaxing w/ Celtic Knots
I’ve found drawing Celtic Knots to be the perfect activity for “active mental relaxation”. It takes a little while for the under/over pattern to become second-nature, but man, is it exhilarating when it does!
Ironically enough, I usually make mistakes (like in the bottom left) when I find myself thinking too much.
I’ve found Aidan Meehan’s books to be the best instruction, at least for me.