Oh yeah, That.

"Since Patience, by definition, can only be present in response to a visiting stress, perfecting Patience depends on being able to feel at home, to relax in the middle of the tension of waiting for the stress to be gone. Patience remains present as long as the mind remembers that things end ('This stress will leave, sometime') when their conditioning causes end ('I am not in charge'). Wise Concentration keeps the mind tranquil and the body comfortable so that Patience can keep itself from running out."

-Sylvia Boorstein
Pay Attention for Goodness' Sake: Practicing the Perfections of the Heart, the Buddhist Path of Kindness