Sometimes telling someone how they should change their life doesn't work. But show them the beautiful things in life, tell them a good story, and they become inspired. Some people appreciate art and beauty more than words. 
Some questions to ponder:
Is martial arts an art? Could sports be an art? How about writing beautiful code? Baking a cake? Writing perfect emails? Lifting weights? Does the medium for art matter, or is it the beauty behind its creation?
Is it possible to enter flow stats without art? 
What would the world look like without art or beauty? Does art make the world a better place?