Your principles can’t be extinguished unless you snuff out the thoughts that feed them

From The Daily Stoic by Ryan Holiday and Stephen Hanselman. 

Your principles can’t be extinguished unless you snuff out the thoughts that feed them, for it’s continually in your power to reignite new ones. . . . It’s possible to start living again! See things anew as you once did—that is how to restart life!

—MARCUS AURELIUS, MEDITATIONS, 7.2